There is no conversation more boring than the one where everybody agrees.

Since philosophy is the art which teaches us how to live, and since children need to learn it as much as we do at other ages, why do we not instruct them in it?

Marriage has, for its share, usefulness, justice, honour, and constancy; a stale but more durable pleasure. Love is grounded on pleasure alone, and it is indeed more gratifying to the senses, keener and more acute; a pleasure stirred and kept alive by difficulties. There must be a sting and a smart in it. It ceases to be love if it has no shafts and no fire.

The beautiful souls are they that are universal, open, and ready for all things.

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.

It needs good management to enjoy life. I enjoy it twice as much as others, for the measure of enjoyment depends on the greater or less attention that we give to it...The shorter my possession of life the deeper and fuller I must make it.

We took advantage of [the Indians'] ignorance and inexperience to incline them the more easily toward treachery, lewdness, avarice, and every sort of inhumanity and cruelty, after the example and pattern of our ways.