It makes me hate accepting things that are probable when they are held up before me as infallibly true. I prefer these words which tone down and modify the hastiness of our propositions: "Perhaps, In some sort, Some, They say, I think," and the like.

Take care that old age does not wrinkle your spirit even more than your face.

Their [the Skeptics'] way of speaking is: "I settle nothing. . . . I do not understand it. . . . Nothing seems true that may not seem false." Their sacramental word is . . . , which is to say, I suspend my judgment.

If falsehood, like truth, had but one face, we would be more on equal terms. For we would consider the contrary of what the liar said to be certain. But the opposite of truth has a hundred thousand faces and an infinite field.

Don't be afraid to say what you are not afraid to think

I must accommodate my history to the hour: I may presently change, not only by fortune, but also by intention.

Most men are rich in borrowed sufficiency: a man may very well say a good thing, give a good answer, cite a good sentence, without at all seeing the force of either the one or the other.