Civilization advances by extending the number of important operations which we can perform without thinking of them.

The point about zero is that we do not need to use it in the operation of daily life. No one goes out to buy zero fish.

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.

Almost all new ideas have a certain aspect of foolishness when they are first produced.

Education which is not modern share the fate of all organic things which are kept too long.

The purpose of education is not to fill a vessel but to kindle a flame.

The total absence of humor from the Bible is one of the most singular things in all literature.