Reason has so many forms that we do not know which to choose-Experiment has no fewer.

I, who am king of the matter I treat, and who owe an accounting for it to no one, do not for all that believe myself in all I write. I often hazard sallies of my mind which I mistrust.

Obstinacy and dogmatism are the surest signs of stupidity. Is there anything more confident, resolute, disdainful, grave and serious than an ass?

Virtue rejects facility to be her companion. She requires a craggy, rough and thorny way.

It's not victory if it doesn't end the war.

There are no truths, only moments of claryty passing for answers.

He who is not sure of his memory, should not undertake the trade of lying.