The aim of science is to seek the simplest explanation of complex facts. We are apt to fall into the error of thinking that the facts are simple because simplicity is the goal of our quest. The guiding motto in the life of every natural philosopher should be ``Seek simplicity and distrust it.''

Life is an offensive, directed against the repetitious mechanism of the Universe.

The great achievements of the past were the adventures of the past. Only the adventurous can understand the greatness of the past.

The world is shocked, or amused, by the sight of saintly old people hindering in the name of morality the removal of obvious brutalities from a legal system.

Vigorous societies harbor a certain extravagance of objectives, so that men wander beyond the safe provision of personal gratifications.

Religion is the reaction of human nature to its search for God.

The only use of knowledge of the past is to equip us for the present.