Christian Wolff (1679–1754) was a profoundly important philosopher during the eighteenth century. ‘Wolffianism,’ broadly defined as adherence to Wolff’s teachings, was taught and promoted at all the major German universities for decades. Kant was educated and began his career within an environment that was dominated by discussion between proponents of and opponents to Wolff’s philosophy. This chapter contains a complete translation of Chapter 1 of Part 1 of Wolff’s ‘German Ethics’ (1720), in which Wolff gives a general overview of almost all the core features of his ‘universal practical philosophy.’ The translation contained in this chapter therefore serves as a concise introduction to Wolff’s ethics in general, and one that is especially helpful for better understanding Kant’s explicit reference to Wolff’s principle of perfection in the second Critique (see 5:40), among other things.