Discourses, "In What a Man Ought to be Exercised Who Has Made Proficiency; and That We Neglect the Chief Things" (§1)

“There are three things (topics, ) in which a man ought to exercise himself who would be wise and good. The first concerns the desires and the aversions, that a man may not fail to get what he desires, and that he may not fall into that which he does not desire.”