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.

Never depend upon institutions or government to solve any problem. All social movements are founded by, guided by, motivated and seen through by the passion of individuals.

If the future is to remain open and free, we need people who can tolerate the unknown, who will not need the support of completely worked out systems or traditional blueprints from the past.

The way in which each human infant is transformed into the finished adult, into the complicated individual version of his city and his century is one of the most fascinating studies open to the curious minded.

As the traveler who has once been from home is wiser than he who has never left his own doorstep, so a knowledge of one other culture should sharpen our ability to scrutinize more steadily, to appreciate more lovingly, our own.

For the human species to evolve, the conversation must deepen.

Even very recently, the elders could say: 'You know, I have been young and you never have been old.' But today's young people can reply: 'You never have been young in the world I am young in, and you never can be.' ... the older generation will never see repeated in the lives of young people their own unprecedented experience of sequentially emerging change. This break between generations is wholly new: it is planetary and universal.