“Use, do not abuse; the wise man arrange things so. I flee Epictetus and Petronius alike. Neither abstinence nor excess ever renders man happy.”

“Use, do not abuse; neither abstinence nor excess ever renders man happy.”

“This agglomeration which was called and which still calls itself the Holy Roman Empire was neither holy, nor Roman, nor an empire.”

“What can be feared when one is doing one's duty? I know the rage of my enemies. I know all their slanders; but when one only tries to do good to men and when one does not offend heaven, one can fear nothing, neither during life nor after death.”

“Every man is guilty of all the good he did not do.”

“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"]”

“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.”