That folly of old age which is called dotage is peculiar to silly old men, not to age itself.

Thus nature has no love for solitude, and always leans, as it were, on some support; and the sweetest support is found in the most intimate friendship.

Life is nothing without friendship.

All things tend to corrupt perverted minds.

The following passage is one of those cited by Copernicus himself in his preface to De Revolutionibus: "The Syracusan Hicetas, as Theophrastus asserts, holds the view that the heaven, sun, moon, stars, and in short all of the things on high are stationary, and that nothing in the world is in motion except the earth, which by revolving and twisting round its axis with extreme velocity produces all the same results as would be produced if the earth were stationary and the heaven in motion. . . ."

Friendship improves happiness and abates misery, by the doubling of our joy and the dividing of our grief.

To some extent I liken slavery to death.