Science is organized knowledge. Wisdom is organized life.

Seek not the favor of the multitude; it is seldom got by honest and lawful means. But seek the testimony of few; and number not voices, but weigh them.

Ingratitude is the essence of vileness.

Happiness is not an ideal of reason, but of imagination.

It is not necessary that whilst I live I live happily; but it is necessary that so long as I live I should live honourably.