All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason.
What can I know? What ought I to do? What can I hope?
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.