Letter 121 — On Instinct in Animals (§1)

“You will bring suit against me, I feel sure, when I set forth for you to-day’s little problem, with which we have already fumbled long enough. You will cry out again: “What has this to do with character?” Cry out if you like, but let me first of all match you with other opponents, against whom you may bring suit—such as Posidonius and Archidemus; these men will stand trial. I shall then go on to say that whatever deals with character does not necessarily produce good character.”