If one cannot state a matter clearly enough so that even an intelligent twelve-year-old can understand it, one should remain within the cloistered walls of the university and laboratory until one gets a better grasp of one's subject matter.

Earth Day is the first holy day...and is devoted to the harmony of nature... The celebration offends no historical calendar, yet it transcends them all.

It is not until science has become a discipline to which the research ability of any mind from any class in society can be attracted that it can become rigorously scientific.

Monogamous heterosexual love is probably one of the most difficult, complex and demanding of human relationships.

Of all the peoples whom I have studied, from city dwellers to cliff dwellers, I always find that at least 50 percent would prefer to have at least one jungle between themselves and their mothers-in-law.

The need to find meaning...is as real as the need for trust and for love, for relations with other human beings.

You just have to learn not to care about the dusty mites under the beds.