We are wide-eyed in contemplating the possibility that life may exist elsewhere in the universe, but we wear blinders when contemplating the possibilities of life on earth.

Don't defy the diagnosis, try to defy the verdict.

The old emphasis upon superficial differences that separate peoples must give way to education for citizenship in the human community.

The main trouble with despair is that it is self-fulfilling. People who fear the worst tend to invite it. Heads that are down can't scan the horizon for new openings. Bursts of energy do not spring from a spirit of defeat. Ultimately, helplessness leads to hopelessness.

The possibility of war increases in direct proportion to the effectiveness of the instruments of war.

Hope, purpose and determination are not merely mental states. They have electrochemical connections that affect the immune system.

The real wealth, not only of America, but of the world, is in the resources of the ground we stand on, and in the resources of the humankind.