Letter 20 — On Practising What You Preach (§5)

“Therefore, to omit the ancient definitions of wisdom and to include the whole manner of human life, I can be satisfied with the following: “What is wisdom? Always desiring the same things, and always refusing the same things.” You may be excused from adding the little proviso,—that what you wish, should be right; since no man can always be satisfied with the same thing, unless it is right.”