For the person and for the species love is the form of behavior having the highest survival value.

The idea of "race" represents one of the most dangerous myths of our time.

Psychosclerosis: the hardening of the attitude which causes a person to cease dreaming, seeing, thinking, and leading.

Intellect without humanity is not good enough...what the world is suffering from at the present time is not so much an overabundance of intellect as an insufficiency of humanity.

All education should be directed toward the refinement of the individual's sensibilities in relation not only to one's fellow humans everywhere, but to all living things whatsoever.

The world is so full of wonderful things we should all, if we were taught how to appreciate it, be far richer than kings.

Hell has been described as a pocket edition of Chicago.