You cannot prevent and prepare for war at the same time.

Man owes his strength in the struggle for existence to the fact that he is a social animal.

Somebody who only reads newspapers and at best books of contemporary authors looks to me like an extremely near-sighted person who scorns eyeglasses. He is completely dependent on the prejudices and fashions of his times, since he never gets to see or hear anything else.

I thought of that while riding my bicycle.

From the standpoint of daily life, however, there is one thing we do know: that we are here for the sake of each other.

If you took half of something and continued to take half of that half and so on, you would never reach an end.

I have always loved solitude, a trait which tends to increase with age.