Discourses, "How a Man Should Proceed from the Principle of God Being the Father of All Men to the Rest" (§2)

“Through this kinship with the flesh, some of us inclining to it become like wolves, faithless and treacherous and mischievous; some become like lions, savage and bestial and untamed; but the greater part of us become foxes, and other worse animals. For what else is a slanderer and malignant man than a fox, or some other more wretched and meaner animal? See then and take care that you do not become some one of these miserable things.”