Humanity . . . lies in man's capacity to question the known and imagine the unknown.

Pigs and cows and chickens and people are all competing for grain.

Humanity . . . lies in man's capacity to question the known and imagine the unknown.

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.

Don't depend on governments or corporations to fix problems. Social revolutions are led by passionate individuals and that's what makes the difference.

I approached the idea of college with the expectation of taking part in an intellectual feast. ... In college, in some way that I devoutly believed in but could not explain, I expected to become a person.

The differences between the two sexes is one of the important conditions upon which we have built the many varieties of human culture that give human beings dignity and stature.