When we do not know the truth of a thing, it is good that there should exist a common error which determines the mind of man, as, for example, the moon, to which is attributed the change of seasons, the progress of diseases, etc. For the chief malady of man is a restless curiosity about things which he cannot understand; and it is not so bad for him to be in error as to be curious to no purpose.

Man's greatness is great in that he knows himself wretched. A tree does not know itself wretched. It is then being wretched to know oneself wretched; but it is being great to know that one is wretched.

The two principles of truth, reason and senses, are not only both not genuine, but are engaged in mutual deception. The senses deceive reason through false appearances, and the senses are disturbed by passions, which produce false impressions.

Thought makes the whole dignity of man; therefore endeavor to think well, that is the only morality.

You always admire what you really don't understand.

The heart has arguments with which the logic of mind is not aquainted.

A mere trifle consoles us, for a mere trifle distresses us.