True friends are the whole world to one another; and he that is a friend to himself is also a friend to mankind. Even in my studies the greatest delight I take is of imparting it to others; for there is no relish to me in the possessing of anything without a partner.

Everything that exceeds the bounds of moderation has an unstable foundation.

Everything is the product of one universal creative effort. There is nothing dead in Nature.

They who have light in themselves will not revolve as satellites.

You talk one way, you live another.

Philosophy is the art and law of life, and it teaches us what to do in all cases, and, like good marksmen, to hit the white at any distance.

To live is not a blessing, but to live well.