“mankind have a little corrupted nature, for they were not born wolves, and they have become wolves; God has given them neither cannon of four-and-twenty pounders, nor bayonets; and yet they have made cannon and bayonets to destroy one another.”

“Men must have somewhat altered the course of nature; for they were not born wolves, yet they have become wolves. God did not give them twenty-four-pounders or bayonets, yet they have made themselves bayonets and guns to destroy each other. In the same category I place not only bankruptcies, but the law which carries off the bankrupts’ effects, so as to defraud their creditors.”

“If God has made us in his image, we have returned him the favor.”

“I am the best-natured creature in the world, and yet I have already killed three, and of these three two were priests.”

“I have never made but one prayer to God, a very short one: Oh Lord, make my enemies ridiculous. And God granted it."(Letter to Étienne Noël Damilaville, May 16, 1767)”

“I have received your new book against the human race, and thank you for it. Never was such a cleverness used in the design of making us all stupid. One longs, in reading your book, to walk on all fours. But as I have lost that habit for more than sixty years, I feel unhappily the impossibility of resuming it. Nor can I embark in search of the savages of Canada, because the maladies to which I am condemned render a European surgeon necessary to me; because war is going on in those regions; and because the example of our actions has made the savages nearly as bad as ourselves. [in response to Rousseau's "The Social Contract"]”

“Answer me, you who believe that animals are only machines. Has nature arranged for this animal to have all the machinery of feelings only in order for it not to have any at all?”