Aristotle (c. 384-322 BCE)
“In democracies the most potent cause of revolution is the unprincipled character of popular leaders.”
- From Aristotle’s Politics (Bekker page 1304b), translated by T. A. Sinclair and revised by T. J. Saunders (Penguin Classics, 1962, 1981, 1992).
I like this quote!