Aristotle (c. 384-322 BCE)
“To kill oneself to escape from poverty or love or anything else that is distressing is not courageous but rather the act of a coward, because it shows weakness of character to run away from hardships, and the suicide endures death not because it is a fine thing to do but in order to escape from suffering.”
- From The Nicomachean Ethics (Bekker number 1116a) by Aristotle, translated by J. A. K. Thomson (Penguin Classics, 2004).