That the sun shines tomorrow is a judgement that is as true as the contrary judgement.

To invent without scruple a new principle to every new phenomenon, instead of adapting it to the old; to overload our hypothesis with a variety of this kind, are certain proofs that none of these principles is the just one, and that we only desire, by a number of falsehoods, to cover our ignorance of the truth.

The Crusades - the most signal and most durable monument of human folly that has yet appeared in any age or nation.

Kitsch is: a species of beauty, which, as it is florid and superficial, pleases at first; but soon palls upon the taste, and is rejected with disdain, at least rated at much lower value.

When anyone tells me that he saw a dead man restored to life, I immediately consider with myself whether it be more probable that this person should either deceive or be deceived or that the fact which he relates should really have happened. I weigh the one miracle against the other and according to the superiority which I discover, I pronounce my decision. Always I reject the greater miracle. If the falsehood of his testimony would be more miraculous than the event which he relates, then and not till then, can he pretend to command my belief or opinion.

The free conversation of a friend is what I would prefer to any environment.

Nothing indeed can be a stronger presumption of falsehood than the approbation of the multitude.