Euripides (c. 485-406 BCE)
“Men do not judge justly with their eyes when, before they know for sure the true nature of a person’s heart, they hate on sight, though they have suffered no grievance.”
- From Euripides’ Medea (approximately line 220), translated by James Morwood in Medea and Other Plays (Oxford University Press, 1997, 1998, 2008).