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.

Whatever advantages may have arisen, in the past, out of the existence of a specially favored and highly privileged aristocracy, it is clear to me that today no argument can stand that supports unequal opportunity or any intrinsic disqualification for sharing in the whole of life.

It was not until we saw the picture of the earth, from the moon, that we realized how small and how helpless this planet is - something that we must hold in our arms and care for.

We need every human gift and cannot afford to neglect any gift because of artificial barriers of sex or race or class or national origin.

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.

In the presence of grandparent and grandchild, past and future merge in the present.

The most intractable problem today is not pollution or technology or war; but the lack of belief that the future is very much in the hands of the individual.