“Fathers are biological necessities, but social accidents.”

Having two bathrooms ruined the capacity to co-operate.

In Bali life is a rhythmic, patterned unreality of pleasant, significant movement, centered in one’s own body to which all emotions long ago withdrew.

The problem with America today is that too many people know too much about not enough.

The assumption that men and woman are essentially alike in all respects, or even in the most important ones, is a damaging one, as damaging as the assumption that they are different in ways in which they aren’t different, perhaps more so.

A small group of thoughtful people could change the world.

Of course we need children! Adults need children in their lives to listen to and care for, to keep their imagination fresh and their hearts young and to make the future a reality for which they are willing to work.

The people of one nation alone cannot save their own children; each holds the responsibility for the others’ children.

Motherhood is a biological fact, while fatherhood is a social invention.

Grandparents are given a second chance to enjoy parenthood with fewer of its tribulations and anxieties.

Parents feel like immigrants in the country of the young.

The time has come, I think, when we must recognize bisexuality as a normal form of human behavior.

The atmosphere is the key symbol of global interdependence.

Men have always been afraid that women could get along without them.

Home, I learned, can be anywhere you make it. Home is also the place to which you come back again and again.

Always remember that you are absolutely unique. Just like everyone else.

People are still encouraged to marry as if they could count on marriage being for life, and at the same time they are absorbing a knowledge of the great frequency of divorce.

Man comes not from an egg but from an animalcule that is found in male sperm.

For my part, I would say that the male sperm and seeds of plants have been penetrated so far that there is nothing further to discover in this great secret, but I could err in my opinion.

DNA was my only gold rush. I regarded DNA as worth a gold rush.

Religion is an attempt to get control over the sensory world, in which we are placed, by means of the wish-world, which we have developed inside us as a result of biological and psychological necessities. But it cannot achieve its end.

Biological men have no place in women’s sports.

If the history-deniers who doubt the fact of evolution are ignorant of biology, those who think the world began less than ten thousand years ago are worst than ignorant, they are the deluded to the point of perversity.

If there is a human moral to be drawn, it is that we must teach our children altruism, for we cannot expect it to be part of their biological nature.

And you are made of a hundred trillion cells. We are, each of us, a multitude.