The years of early childhood are the time to prepare the soil.

The more clearly we can focus our attention on the wonders and realities of the universe about us, the less taste we shall have for destruction.

Those who contemplate the beauty of the earth find reserves of strength that will endure as long as life lasts.

Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.

In nature nothing exists alone.

If a child is to keep alive his inborn sense of wonder, he needs the companionship of at least one adult who can share it, rediscovering with him the joy, excitement, and mystery of the world we live in.

Science is part of the reality of living; it is the what, the how, and the why of everything in our experience.