The scientist believes in proof without certainty.

In teaching it is the method and not the content that is the message.

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.

It is work, work that one delights in, that is the surest guarantor of happiness. But even here it is a work that has to be earned by labor in one's earlier years. One should labor so hard in youth that everything one does subsequently is easy by comparison.

Because women live creatively, they rarely experience the need to depict or write about that which to them is a primary experience and which men know only at a second remove. Women create naturally, men create artificially.

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

It's by what you do that you communicate to others that you are deeply involved in their well being.