Kant refers to the Dignity of Man in several of his works. This has prompted a number of his interpreters to attest the Dignity of Man a central position in Kantian ethics and legal philosophy.Footnote 1 This, however, should be stated with caution, for a number of reasons. First of all, Kant does not consistently use the term “Menschenwürde” (“Dignity of Man”); instead he uses, in addition to other insignificant composites like “Würde des Gebots” (“Dignity of Law”), “Würde der Pflicht” (“Dignity of Duty”), and “Würde der Sittlichkeit” (“Dignity of Morality”), particularlyFootnote 2 “Würde eines vernünftigen Wesens” (“Dignity of a Rational Being”)Footnote 3 and “Würde der Menschheit” (“Dignity of Humanity”).Footnote 4 Only in two of his later works, Die Metaphysik der Sitten. Metaphysische Anfangsgründe der Tugendlehre (The Metaphysics of Morals. Metaphysical First Principles of the Doctrine of Virtue) from 1798 and Anthropologie in pragmatischer Hinsicht (Anthropology from a Pragmatic Point of View) from 1800, he uses the compound expression “Menschenwürde” (“Dignity of Man”, “Dignity of Humanity”) three times en passant.Footnote 5 The fact that the term “Menschenwürde” is very differently accentuated in Kant's various ethical writings speaks against its alleged central role in Kant's Ethics. In Kant's first ethical writing of his critical phase, the Groundwork of the Metaphysics of Morals from 1785, the term “Würde, “dignity”, insofar as it is applied to rational beings, appears relatively late, though admittedly with a certain frequency and relevance for Kant's central line of argument.Footnote 6 In the more extensive elaboration of his ethics in his Kritik der praktischen Vernunft (Critique of Practical Reason) from 1788, which is particularly important in the overall context of his critical project, the term does not occupy any significant position and is mentioned only twice en passant.Footnote 7 In Kant's Eine Vorlesung über Ethik (Lectures on Ethics), the Dignity of Man does not play a role either.Footnote 8 Also in his Die Religion innerhalb der Grenzen der bloßen Vernunft (Religion within the Boundaries of Mere Reason) from 1793, the term is mentioned only peripherally.Footnote 9 Finally, in Kant's major work in legal and political philosophy, Die Metaphysik der Sitten. Metaphysische Anfangsgründe der Rechtslehre (The Metaphysics of Morals. The Metaphysical First Principles of the Doctrine of Right) from 1797, the term “Würde” does not occur any more at all. This does not go without a certain historical irony, for the modern meaning of “Würde des Menschen” was essentially influenced by important legal and political provisions of the 20th century, including the Preamble to the Charta of the UN in 1945, the Preamble and Article 1 of the General Declaration of Human Rights from 1948 and Article 1 Paragraph 1 of the Constitution of the Federal Republic of Germany from 1949.Footnote 10 Also in Kant's smaller works in legal and political philosophy, for instance in his Über den Gemeinpruch: Das mag in der Theorie richtig sein, taugt aber nicht für die Praxis (On the Common Saying: This May be True in Theory, But it Does not Apply in Practice) from 1793 and Zum ewigen Frieden (Perpetual Peace) from 1795, the term plays no significant role. The term reappears for the first time in 1798 in the second part of The Metaphysics of Morals, the Metaphysical First Principles of the Doctrine of Virtue, and this time somewhat more frequently (eight times according to my counting), and mostly in the variant “Würde der Menschheit” (“Dignity of Humanity”), namely five times, though not as a central structural element; rather, if we set aside two somewhat more elaborate usages of the term, in the form of merely incidental references.Footnote 11 Finally, there are two rather insignificant mentions in the Opus postumum.Footnote 12
In the Groundwork of the Metaphysics of Morals from 1785, the term “Würde eines vernünftigen Wesens” (“Dignity of a Rational Being”) is only introduced in the context of the discussion of the Third FormulaFootnote 13 of the Categorical Imperative, in the “idea of the will of every rational being as a will giving universal law”,Footnote 14 that is, the idea of Self-Legislation and of a Kingdom of the Ends of all Legislative Bodies. This late reference to the “Würde des Menschen” may be surprising to some. For the concept of “human dignity” is often, and mostly without further discussion, associated with the Second Formula of the Categorical Imperative: “So act that you use humanity, whether in your own person or in the person of any other, always at the same time as an end, never merely as a means”.Footnote 15 This is also the case with the interpretation of the Federal Constitutional Court of Article 1 Paragraph 1 of the German Constitution, the prohibition of violating human dignity. According to this interpretation, which was inspired by the constitutional lawyer Günter Dürig,Footnote 16 the treatment of a human being as a mere object should be forbidden (“object formula”).Footnote 17 However, this interpretation cannot appeal to any explicit reference to the Dignity of Man in the context of the Second Formula of the Categorical Imperative in the Groundwork of the Metaphysics of Morals. For in the course of developing the Second Formula of the Categorical Imperative, which serves as a model for the “object formula”, Kant neither explicitly nor implicitly refers to the Dignity of Man or the Dignity of the Person.Footnote 18 One may hypothesize that Kant did so intentionally, for he generally chose his expressions very carefully and was highly considerate about where to introduce concepts in his architecturally sophisticated works. This thesis is supported by the observation that, even in a second listing of the various formulae of the Moral Law, the mentioning of Dignity does not follow the Second Formula of Man as an End in Himself, but only follows the Third Formula of Self-Legislation or of the idea of a Kingdom of Ends of all Rational Beings.Footnote 19 As one progresses further in the Groundwork, the Dignity of Man is mentioned three more times in conjunction with the Third Formula of Self-Legislation or the Kingdom of Ends.Footnote 20 This means: In the Groundwork there are five places that explicitly link the Dignity of Man and the Third Formula of Self-Legislation and the Kingdom of Ends, but not a single reference to the Second Formula of “End-in-Oneself-ness”. This cannot be a coincidence. Consequently, an explanation has to be sought that explains why Kant did not introduce the Dignity of Man in the Second Formula of his Groundwork, but only in the context of the corollaries of the Third Formula of the Categorical Imperative, and why he always links it with this Third Formula. A further question is whether any substantial significance lies therein. And one must also inquire why this clear attribution of the Groundwork changes in the Doctrine of Virtue, a question worth to be examined more closely. Before, however, the relationship between the concepts “The Dignity of Man”, “The Dignity of Humanity”, and “The Dignity of a Rational Being” needs to be discussed.
1. The Dignity of Humanity, The Dignity of Man and The Dignity of a Rational Being
In the common understanding of today, the term “Menschheit” (“humanity”) is exclusively associated with the collective of all people or at the least of the collective of all people currently living on earth. However, such a collective reference was not necessarily intended by Kant, for on several occasions he uses the term “humanity” along with attributions to individual persons (”“in your person”, ”“in the person of every other”, ”“in his person”, ”“in oneself” etc.).Footnote 21 Notably the Second Formula of the Categorical Imperative cited above would be hardly comprehensible if one were to relate acting out of duty to humanity as a collective rather than to the individual agent. And elsewhere Kant comes up with this formulation: “Humanity itself is a dignity”.Footnote 22 From all this the only possible conclusion is that by “humanity” Kant does not always or even often, but at best occasionally,Footnote 23 refer to the collective of all humans, and often refers by it to a characteristic of every single person,Footnote 24 approximately in the sense of “being human”, “humankind”, “humanness”, “humanity”, in contrast to the “animality” of humans and animals. In the Doctrine of Virtue, “humanity” explicitly refers to the “homo noumenon”, the rational element in man.Footnote 25
One must therefore examine in every single case whether “dignity of humanity” refers to a specifically human quality of individual humans and thus simply further characterizes the Dignity of Man, or whether it refers to the dignity of the collective of all humans. In the single place in the Groundwork in which the term “dignity of humanity” occurs, the former option suggests itself, for “as of a rational nature” is immediately added.Footnote 26 In the five places in the Doctrine of Virtue “the dignity of humanity” is associated either with “in his own person”, “in another person” or with “in every other human being”,Footnote 27 so that also here the term can only be understood as a reference to a characteristic of individual humans. One can therefore state that by the term “the dignity of humanity” Kant continuously refers to a characteristic of individual humans, and not to the collective of all humans.
Also in need of clarification is the fact that Kant does not speak of the dignity “of man” at all in the first significant mentioning of the concept of dignity in the Groundwork of the Metaphysics of Morals; instead, he speaks of the dignity “of a rational being”.Footnote 28 The second mentioning is then as follows: “In the kingdom of ends, everything has either a price or a dignity”Footnote 29 [first emphasis DvdP]. Later, Kant also speaks of the dignity “in the person who fulfills all of his duties.”Footnote 30 Since the Kingdom of Ends has not only members but also a head, namely God, Kant does not confine dignity to humans, but also extends it to God and other possibly existing rational beings such as angels or extraterrestrials. Accordingly, the Dignity of Man is, at least in the framework of the Groundwork of the Metaphysics of Morals, simply a special case of the general dignity of rational beings.
2. The Definition of the Dignity of Man in Groundwork of the Metaphysics of Morals
The most extensive and most relevant formulation of the Dignity of Man is to be found in Kant's Groundwork of the Metaphysics of Morals; hence, an interpretation of Kant's notion of dignity best begins with an examination of this work.
First of all one has to take into account that, according to Kant, the three ways of rendering the principle of morality are “at bottom only so many formulae of the very same law …”Footnote 31 The disparity between them is, according to Kant, “subjectively rather than objectively practical”.Footnote 32 Hence, one must not assume that the Second and the Third Formula refer to completely different moral principles. This notwithstanding, Kant draws an explicit distinction between the single formulae, by assigning to them the quantitative categories of “unity”, “plurality”, and “totality”, respectively. While the category of “multiplicity” applies to the Second Formula, he assigns the category of “totality” to the Third Formula.Footnote 33 In the context of these qualifications, three central differences emerge between the First and Second Formula on the one hand, and the Third Formula on the other. These differences may offer an explanation why in the Groundwork human dignity is exclusively related to the Third Formula.
First of all, only in the Third Formula Kant speaks of an “idea” or an “ideal” several times.Footnote 34 The first reference to the Dignity of Man explicitly characterizes it as “idea of the dignity of a rational being”.Footnote 35 And in a footnote, the Kingdom of Ends is explicitly characterized as a “practical idea”.Footnote 36 What is the meaning of these characterizations? For Kant, the “idea” is a “necessary concept of reason to which no corresponding object can be given in sense-experience”.Footnote 37 By means of ideas we consider all empirical knowledge as determined by an absolute totality of conditions. What is the function of ideas in practical usage? Kant elucidates this question in a passage in the Critique of Pure Reason, which reads like a commentary to the Third Formula in the Groundwork: “But since, on the other hand, in the practical employment of understanding, our sole concern is with the carrying out of rules, the idea of practical reason can always be given actually in concreto, though only in part; it is, indeed, the indispensable condition of all practical employment of reason. The practice of it is always limited and defective, but is not confined within determinable boundaries, and is therefore always under the influence of the concept of an absolute completeness. The practical idea is, therefore, always in the highest degree fruitful, and in its relation to our actual activities is indispensably necessary. Reason is here, indeed, exercising causality, as actually bringing about that which its concept contains; and of such wisdom we cannot, therefore, say disparagingly it is only an idea. On the contrary, just because it is the idea of the necessary unity of all possible ends, it must as an original, and at least restrictive condition, serve as standard on all that bears on the practical”.Footnote 38
Second, there is also a difference in the formulations of the Formulae. Both the First and the Second Formula of the Practical Law actually have the grammatical form of imperatives and are rendered in spaced letters: “Handle nur nach derjenigen Maxime …” (“Act only according to this maxim …”), “Handle so, daß du …” (“Act in such a way that you …”); that is, they directly address the individual agent. By contrast, there is no such grammatical imperative to be found in the Third Formula.Footnote 39 Why is that so? A single acting Person cannot adopt as an action-guiding maxim the idea of the Will of Every Rational Being as a Universally Legislative Being and of the Kingdom of Ends of Rational Beings; for as a mere individual agent he is virtually unable to take into account all End-Determining Beings; in particular, he will never be able to discern with full certainty the ends of God. Indeed, the thought of the All-Embracing Self-Legislation and of the total Kingdom of Ends cannot even be brought to fruition with regard to practical use by taking it as a real possibility; for the totality of the End-Determining Beings and the existence of God are mere ideas, both from a theoretical and from a practical point of view.
Finally, it is a striking fact that Kant explicates only the First and Second formula by means of his four well-known examples (suicide, fallacious promises, squandering of talent, emergency assistance), but not the Third. Why is that so? Once again we can cite the same reason: The idea of the Kingdom of Ends of all Legislative Beings cannot be used as a means for determining acts in concrete single cases since the full recognition of all End-Determining Beings including God cannot be reached; in fact, to repeat, not even as an action-guiding possibility can it be brought to fruition within practice. The Third Formula places the idea of autonomous purposes under the reasonable concept of the Absolute Completeness of all Autonomously End-Determining Beings. Human Dignity is thus an expression of this “Idea of Completeness” as opposed to the mere introduction of the Agent and Others as ends in themselves in the Second Formula.
We can now use the three specifics of the Third Formula just elucidated to explain the exclusive assignment of human dignity to the Third Formula in the Groundwork. The Second Formula of the Categorical Imperative calls for the recognition of Others and of the Agent himself as an End, formulating the “End-in-Themselves-ness” of the Agent and Others with respect to one's own and foreign humanity. This occurs from the perspective of the individual Agent and is initially confined to humans, for humanity in one's own and in the foreign person should never be used as a mere means. Only when Kant reasons on self-legislation and on the Kingdom of Ends constituted by it, the ideal perspective of an impartial and god-like third observer is adopted. This third observer cannot be the addressee of the Categorical Imperative, that is, he is not obligated to humanity within his own person and the person of others, but only obligates. Only this is the perspective of the ideal totality of all End-Determining Beings.
What does the substantive difference consist in between the state of being an end in oneself, the “End-in-Oneself-ness” according to the Second Formula of the Categorical Imperative, and the self-legislation with the corollary of the Dignity of Man, the result of the Third Formula of the “Principle” of the Universally Legislating Will?Footnote 40 Kant defines “dignity” as the quality of a rational being “who obeys no law other than that which he simultaneously gives himself”.Footnote 41 Accordingly, it is a crucial condition that every being capable of dignity is the author of his own ethical restrictions. This is not yet necessarily established by the Second Formula of the Categorical Imperative, that is, the “End-in-Oneself-ness” formula, for the recognition of Others as ends in themselves only requires that the Agent does not use Others as mere means. And this says nothing about why he must not use Others as mere means, that is, it does not make explicit the foundation upon which the obligation to recognize the independent ends of others rests. For it is not explicitly set forth as a necessity that the obligation to recognize the ends of Others and of Oneself necessarily derives from the Other and Oneself as possessors of these ends. The self-contained end may well accompany a locally restricted value, but not necessarily an absolute “inner value” with regard to the totality of all conditions, that is, the ends of all End-Determining Beings. After all, one might also conceive of an ultimate obligation posed, say, by divine law, norms of natural right, or by objective values. The Second Formula of the Categorical Imperative, the Formula of Ends-in-Themselves (Selbstzweckformel), only states, according to the present interpretation, the necessity to ethically consider humans for their own sake, that is, not as a mere means. Unlike the Third Formula, however, it does not make explicit that this necessity has its ultimate source in a complete system of all End-Determining Beings and in the Agent himself as a Legislating Being.
Only in the Third Formula of the Practical Law with its ideal claim to perfection and totality of conditions, that is, only when Kant defines the human being as self-legislating and as member of the Legislating Kingdom of Ends of all Rational Beings, does he exclude an ultimate relativization of the “End-in-Himself-ness” of persons to other normative sources, that is, to sources lying beyond the affected individual in question, e.g. in God. Such alternative sources are excluded in two ways: First, the classification of individual humans in the legislating Kingdom of Ends makes possible the idea of the completeness of the End-Determining Entities. The Kingdom of Ends represents a “whole of all ends”.Footnote 42 Second, as mentioned before, God, as well as other possibly existing rational beings, are integrated into the Kingdom of Ends. The Formula of Ends in Themselves is restricted to humanity, at least in its explicit formulation; by contrast, the “kingdom of ends” consists, according to Kant, not only of “members” – which, though univerally legislating, are also subject to these laws – but also includes a legislating “head” which is not subjected to any law.Footnote 43 While in the Christian tradition the dependency of the human being on God was considered as the source of human dignity,Footnote 44 Kant now conversely construes the Dignity of Man as partial equality of the human being with God as the moral legislator in a common Legislating Kingdom of Ends. This Idea of Self-Legislation and of the Legislating Kingdom of Ends leads to the postulate that only rational beings can be legislating in the Kingdom of Ends. Since animals are not rational in this substantial sense, they cannot be awarded the status of legislating members in the Kingdom of Ends. According to Kant, they cannot claim inherent, morally relevant dignity like human beings. For Kant there exists no direct ethical obligation to animals, but at best to other humans with regard to animals.Footnote 45
The explicatory difference between the quality of “End-in-Oneself-ness” and self-legislation as precondition of dignity becomes apparent in various places. Kant writes: “but that which constitutes the condition under which alone something can be an end in itself has not merely a relative worth, that is, a price, but an inner worth, that is, dignity”. [Emphasis DvdP]Footnote 46 Dignity is characterized here as an explication of the “condition” of “End-in-Oneself-ness”, not as a direct explication of “End-in-Oneself-ness”. Elsewhere Kant writes: “Autonomy is therefore the ground of the dignity of human nature and of every rational nature”. [Second emphasis DvdP]Footnote 47 We can construe, then, a threefold explicatory relationship, running in inverse direction to the sequence of Kant's elaboration. The autonomy of the human, the idea of Self-Legislation, leads to the explication of the Kingdom of Ends and Human Dignity. Together they can in turn clarify the Formula of Ends in Themselves. Finally, if one also takes into consideration the fact that, according to Kant, freedom is the key to explaining the Autonomy of the Will, which is discussed as a final rationale in the third section of the Groundwork,Footnote 48 we get the following fourfold sequence of explications, with the first element – the Freedom of the Will – also serving as an justificatory foundation.Footnote 49
Freedom of the Will → Self-Legislation (Autonomy) → Member of the Kingdom of Ends and in this respect having Dignity → The “End-in-Himself-ness” of Man
Thus, self-legislation, the Autonomy of Man, is, as an essential consequence of the Freedom of the Will, the central source of the normativity of Kantian ethics. In the context of a Kingdom of Ends this self-legislation constitutes the Dignity of Man. It leads in individual ethical conflict situations to the obligation to respect the “end-in himself-ness” of the Other or of Oneself as part of humanity. This cannot, however, apply to God, for God is, as a purely rational being, not subjected to the Imperative of Duty, but is only legislating in the Kingdom of Ends.Footnote 50
Dignity is not the ultimate reason for ethical obligation. The ultimate reason for ethical obligation rather lies in the capacity of the human being for self-legislation, in the “fact of reason”Footnote 51 or in the “moral law within me”.Footnote 52 Dignity as absolute “inner worth” is an idealistic-analytic specification of this ultimate source of ethical obligation, namely, the idea of the legislating status of the human being in the Kingdom of Ends. By contrast, the obligation to respect the “End-in-Oneself-ness” in accordance with the Second Formula of the Categorical Imperative is an explication of this ultimate reason from the perspective of the direct normation of the act in the more specific conflict case either within the Agent himself or among humans.
If one differentiates between “End-in-Oneself-ness” as stated in the Second Formula and Self-Legislation as postulated in the Third Formula, it also becomes clear why Dürig and other interpreters as well as the Federal Constitutional Court associated human dignity in Article 1 Paragraph 1 of the German Constitution with the Second, and not the Third formula of the Categorical Imperative even though this is not in accordance with Kant's text. Self-legislation is for Kant – if one sets aside the Freedom of the Will as an ontological-metaphysical fundament of any ethics – the central and most comprehensive point of justification of ethics. As the most comprehensive point of justification of this kind, the idea of self-legislation is, however, not suitable for the interpretation of the positive-judicial norm of Article 1 Paragraph 1 of the German Constitution, for on the one hand God and possible non-human rational beings do not play a role in law as an external system of obligation and coercion, established “by humans for humans”, and on the other hand, every legal norm, as external obligation, implies a form of heteronomy. Only with the help of specifying the thought of self-legislation by the End-in-Oneself Formula, an adequate interpretation of the positive-judicial normation of human dignity becomes possible. For the End-in-Oneself Formula is, first, to a lesser degree construed as an ethically comprehensive way; second, in its explicit version its reference is confined to humanity; and, third, by including the demand not to use human beings merely as Means, but also as Ends, it leaves room for a certain degree of instrumentalization and, hence, for external obligations enforced by sanctions. An interpretation of the positive-judicial normation of human dignity based on this is, however, no longer in accordance with the concept of Human Dignity that Kant had originally intended in the Groundwork.
This leads to a further reaching interpretational question: what might have induced Kant to construe dignity in the Groundwork as self-legislation in the Kingdom of Ends? Before setting forth a hypothesis about this matter, however, the conception of the Dignity of Man in the Doctrine of Virtue needs to be examined more closely.
3. The Dignity of Man in the Doctrine of Virtue
Only in 1798, that is, 14 years after the publication of the Groundwork, the “Dignity of Man” re-appears in the Metaphysics of Morals with a certain frequency and in a not merely peripheral form. As mentioned before, however, it does not occur in the first section, in the Doctrine of Right, but exclusively in the second section, in the Doctrine of Virtue, and there it still occupies no particularly central and significant position, but occurs in a rather incidental and restricted way. It does so in relation to the duties against oneself,Footnote 53 as well as to the specific duties of virtue owed to other humans out of the regard due to them.Footnote 54 The most comprehensive and most important reference to the Dignity of Man within the Doctrine of Virtue is to be found there as well. Kant writes: “Every human being has a legitimate claim to respect from his fellow human beings and is in turn bound to respect every other”. And he continues: “Humanity itself is a dignity; for a human being cannot be used merely as a means by any human being (either by others or even by himself) but must always be used at the same time as an end. It is just in this that his dignity (personality) consists, by which he raises himself above all other beings in the world that are not human beings and yet can be used, and so over all things”.Footnote 55
Kant identifies here for the first time, then, the Dignity of Man with Man's “End-in-Himself-ness”, that is, with the Second Formula of the Categorical Imperative. However, one should bear in mind the word in the parenthesis after “dignity”: “(personality)”. This word in parentheses indicates, in my view, that the concept of Dignity is used differently here than it is used in the Groundwork,Footnote 56 where, after the mentioning of dignity, the word “prerogative”, that is, “primacy”, was added in parentheses.Footnote 57 By means of this parenthesis Kant obviously differentiates between his earlier concept of the Dignity of a Rational Being as a legislating element in the Kingdom of Ends in the sense of a prerogative and the present concept of Dignity, referring to the human personality as an end in itself, which also appears elsewhere in this work.Footnote 58 As “personality” belongs to the intelligible world, dignity is now also explicitly associated with the sphere of the homo noumenon.Footnote 59
To sum up: Whereas the first concept of the Dignity of Self-Legislation in the Groundwork of the Metaphysics of Morals is continuously used, in the later Doctrine of Virtue solely the second concept of dignity appears, besides several insignificant usages. In between these two versions, chronologically speaking, there is the non-specific use in the Critique of Pure Reason – in which the concept of dignity appears only twice en passant – and its total absence from the writings on legal and political philosophy. This requires an explanation. The first, text-immanent, explanation would be that the concept of dignity as role or position within a common Kingdom of Ends in the Groundwork was displaced by a different understanding of dignity in the Doctrine of Virtue. How can this textual diagnosis of a shift within the construal of the concept of dignity be made more plausible?
4. An Attempt to Explain the Conceptual Shift
Already ancient Rome, notably Cicero, had two divergent notions of the Dignity of Man (dignitas): on the one hand, there is the social or political notion of dignity as rank, position or reputation in the society of the Roman res publica, on the other hand, there is the individualistic or anthropological notion of dignity as distinctive feature of human personality in contrast to other living beings.Footnote 60 Later, Christian thinkers laid particular emphasis on the individualistic understanding of dignity by referring to the immortality of the soul and man's likeness to God.Footnote 61 In Humanism, Pico della Mirandola stressed the openness and comprehensiveness of the potential self-design of man,Footnote 62 thus also focusing the second, individualistic meaning. Pufendorf, the most important protagonist of natural law, regarded dignity an outstanding characteristics of the human soul. According to his understanding, the capacity to recognize and distinguish things marks man above all other living beings.Footnote 63 The everyday understanding of the German word for dignity, Würde, however, was mostly influenced by the first, social meaning.Footnote 64
By focusing on the good will and the “end-in-itself-ness” or self-legislation of the “Moral Law in Me”, Kant's ethics transferred the source of morality into the individual human being. In this respect, both his earlier understanding of human dignity as self-legislation in the Groundwork and his later understanding of human dignity as “end-in-itself-ness” in the Doctrine of Virtue, basically stand in that individualistic-anthropological tradition. Admittedly, the earlier interpretation of the dignity of man as self-legislation in the Kingdom of Ends accommodates the social and political interpretations, if only on a secondary level; for only the position of the person in the community of end-determining and hence self-legislating beings is designated as “dignity”. Presumably, Kant initially drew upon the German every-day understanding of the concept of dignity; we may imagine that he did not want to completely adopt the Christian or humanistic definition of “dignitas” as a purely individual character trait with transcendental references. There was no necessity for this within his theory. Neither man's likeness to God nor the comprehensiveness of his potential self-design were central features of the human for Kant. In the Critique of Practical Reason, the idea of the Kingdom of Ends is no longer present,Footnote 65 while the Ends-in-Themselves formula is retained.Footnote 66 Consequently, in the Doctrine of Virtue there obviously was no need to perpetuate the previous connection between Dignity and Position in the Kingdom of Ends and Self-Legislation. Kant could as well construe the concept of dignity on a secondary level in a purely individualistic way and, by that, in connection with the Formula of Ends in Themselves. Kant thus followed the general tendency towards an individualization of ethics and morals. In fact, one might even say: He supported this trend not only by his ethics in general, but also by his shift towards a purely individualistic understanding of the concept of the Dignity of Man in the course of his critical phase. What might have ultimately prompted this shift, however, remains mysterious – perhaps a novel understanding of human dignity in the course of the French Revolution and the corresponding theoretical debates?
5. Dignity in the Domains of Political Philosophy and Jurisprudence
At the end, the question remains: Why does the concept of human dignity not appear at all in Kant's writings in legal and political philosophy? Otherwise put, why did Kant not attach any importance to human dignity within politics or law? This question can be answered in the following way: Politics and law are, according to Kant, necessarily restricted to external action,Footnote 67 “external action” including all action beyond the immediate obligation by moral law.Footnote 68 His legal and political philosophy rejects any form of obligation and coercion to morality. For Kant, the central category of law and politics rather is external freedom in the sense of the freedom to act, e.g. in his definition of the concept of law and the sole innate human right.Footnote 69 The Dignity of Man in the sense of the absolute value of Self-Legislation and of the position in the Kingdom of Ends (the earlier understanding of the Groundwork), refers, just as the Dignity of Man in the sense of “End-in-Oneself-ness” (the later understanding of the Doctrine of Virtue), exclusively to the inner obligation by the moral law. This obligation only encompasses the core of the inner moral “acting” or obligation and is prior to all external freedom to act to which politics and law are restricted, according to Kant's liberal Enlightenment philosophy. This explains why neither of Kant's two ethical conceptions of the Dignity of Man could become significant for politics and law. The development of the concept of dignity in the 20th century revised this view of Kant. There may be good substantial reasons for this, e.g. the insight into the fact that homo phaenomenon and homo noumenon are inseparable in practice, and that it is necessary also to protect the development of individual morality in the domain of politics and law. One should, however, be aware that by this one leaves behind the Kantian concept of Human Dignity, both in its earlier and its later version.