It is a curious and painful fact that almost all the completely futile treatments that have been believed in during the long history of medical folly have been such as caused acute suffering to the patient. When anesthetics were discovered, pious people considered them an attempt to evade the will of God. It was pointed out, however, that when God extracted Adam's rib He put him into a deep sleep. This proved that anesthetics are all right for men; women, however, ought to suffer, because of the curse of Eve.

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

The point of philosophy is to start with something so simple as not to seem worth stating, and to end with something so paradoxical that no one will believe it.

When we perceive any object of a familiar kind, much of what appears subjectively to be immediately given is really derived from past experience.

There is an artist imprisoned in each one of us. Let him loose to spread joy everywhere.

Ants and savages put strangers to death.

The luxury to disparage freedom is the privilege of those who already possess it.