“The diseases of the rational soul are long-standing and hardened vices, such as greed and ambition—they have put the soul in a straitjacket and have begun to be permanent evils inside it. To put it briefly, this sickness is an unrelenting distortion of judgment, so things that are only mildly desirable are vigorously sought after.”

Seneca, Moral Letters, via The Daily Stoic (Page 93)