What hunger is in relation to food, zest is in relation to life.

Arithmetic must be discovered in just the same sense in which Columbus discovered the West Indies, and we no more create numbers than he created the Indians.

There are certain things that our age needs. It needs, above all, courageous hope and the impulse to creativeness.

In all affairs it's a healthy thing now and then to hang a question mark on the things you have long taken for granted.

Awareness of universals is called conceiving, and a universal of which we are aware is called a concept.

Many a marriage hardly differs from prostitution, except being harder to escape from.

Indemnity for the past and security for the future.