If my soldiers began to think, not one would remain in the ranks. - Frederick II of Prussia

Just as people are born, live a time, and die by diseases or old age, in the same way republics are formed, flower a few centuries, and perish finally by the audacity of a citizen, or by the weapons of their enemies. All has their period; all empires, and largest monarchies even, have only so much time: the republics feel continually that this time will arrive, and they look at any too-powerful family as the carriers of a disease which will give them the blow of death.

(About the battle of Kunersdorf) "I shall not survive this cruel misfortune. The consequences will be worse than defeat itself. I have no resources left, and, to speak quite frankly I believe everything is lost. I shall not outlive the downfall of my country. Farewell, forever!"

A single Voltaire will do more honor to France than a thousand pedants, a thousand false wits, a thousand great men of inferior order.