War does not determine who is right - only who is left.

What is best in mathematics deserves not merely to be learnt as a task, but to assimilated as a part of daily thought, and brought again and again before the mind with ever-renewed encouragement.

We are condemned to kill time, thus we die bit by bit. - Octavio Paz The time you enjoy wasting is not wasted time.

The more we realize our minuteness and our impotence in the face of cosmic forces, the more amazing becomes what human beings have achieved.

Real life is, to most men, a long second best, a perpetual compromise between the ideal and the possible.

Americans need rest, but do not know it.

Dogma demands authority, rather than intelligent thought, as the source of opinion; it requires persecution of heretics and hostility to unbelievers; it asks of its disciples that they should inhibit natural kindliness in favor of systematic hatred.