Sisters, while they are growing up, tend to be very rivalrous and as young mothers they are given to continual rivalrous comparisons of their several children. But once the children grow older, sisters draw closer together and often, in old age, they become each other's chosen and most happy companions. In addition to their shared memories of childhood and of their relationship to each other's children, they share memories of the same home, the same homemaking style, and the same small prejudices about housekeeping that carry the echoes of their mother's voice.

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

The United States has the power to destroy the world, but not the power to save it alone

We are at a point in history where a proper attention to space, and especially near space, may be absolutely crucial in bringing the world together.

There is no more creative force in the world than the menopausal woman with zest.

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.

Photographs [are] of course heavily dependent upon the culture, the disciplinary point of view and the idiosyncratic vision of the particular photographer-analyst.