The indifference, callousness and contempt that so many people exhibit toward animals is evil first because it results in great suffering in animals, and second because it results in an incalculably great impoverishment of the human spirit. 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 things whatsoever.

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

The moments of happiness we enjoy take us by surprise. It is not that we seize them, but that they seize us.

The way I change my life is to act as if I am the person I really want to be.

The measure of man's humanity is the extent and intensity of his love for mankind.

Without love, intelligence is dangerous; without intelligence, love is not enough.

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.