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.

Pessimism is a waste of time.

The great challenge of the '90s... is to salvage and improve the UN and to develop it into an agency capable of meeting the wide range of serious problems that are inherent in a world that has become a single geographic unit.

More and more, the choice for the world's people is between becoming world warriors or world citizens.

The library is not a shrine for the worship of books. It is not a temple where literary incense must be burned or where one's one devotion to the bound book is expressed in ritual. A library, to modify the famous metaphor of Socrates, should be the delivery room for the birth of ideas - a place where history comes to life.

Laughter is a powerful way to tap positive emotions

We are becoming a nation of sissies and hypochondriacs, a self medicating society easily intimidated by pain and prone to panic. We understand almost nothing about the essential robustness of the human body or its ability to meet the challenge of illness.