We need every human gift and cannot afford to neglect any gift because of artificial barriers of sex or race or class or national origin.

Contentment can be bought at a price that one can not possibly pay.

The negative cautions of science are never popular.

Where we choose to put our attention changes our brain, which in time can change how we see and interact with the world.

The anonymity of the city is one of its strengths as well as - carried too far - one of its weaknesses.

The suffering of either sex - of the male who is unable, because of the way in which he was reared, to take the strong initiating or patriarchal role that is still demanded of him, or of the female who has been given too much freedom of movement as a child to stay placidly within the house as an adult - this suffering, this discrepancy, this sense of failure in an enjoined role, is the point of leverage for social change.

Because our civilization is woven of so many diverse strands, the ideas which any one group accepts will be found to contain numerous contradictions.