Dante Alighieri (c. 1265-1321)
“The bad state of the modern world is due—
as you may see, then—to bad leadership;
and not to natural corruption in you.”
- From The Divine Comedy (Purgatorio, Canto XVI, approximately lines 104-106) by Dante Alighieri, translated by John Ciardi (New American Library/Penguin Group, 1954, 1961, 1970).