SOURCE: "The Good," in The Philosophy of Socrates, Macmillan, 1968, pp. 165-204.
In the following essay, Gulley explains that Socrates's teachings emphasize that "knowledge of the good is a necessary and sufficient condition of being good and of doing what is good," but that they do not explicitly state what "the good" is. Gulley examines the Socratic works of Plato, and Xenophon, as well as some references in Aristotle, in order to deduce a consistent understanding of "the good."