In each age there is a series of pressing questions which must be asked and answered. On the correctness of the questions depends the survival of those who ask; on the quality of the answers depends the quality of the life those survivors will lead.

You know you love someone when you cannot put into words how they make you feel.

The closest friends I made all through life have been people who also grew up close to a loved and loving grandmother or grandfather.

If a fish were an anthropologist, the last thing it would discover would be water.

Wonder is very important, because if we never wondered, we would never get to the point of asking questions. Yet wonder may lead people to write poetry or to paint pictures or to pray, as well as to ask the kinds of questions about the world and themselves that can be answered by science.

Cynicism is the other thing that goes with sentimentality.

Earth Day is the first holy day which transcends all national borders, yet preserves all geographical integrities, spans mountains and oceans and time belts, and yet brings people all over the world into one resonating accord, is devoted to the preservation of the harmony in nature and yet draws upon the triumphs of technology, the measurement of time, and instantaneous communication through space.