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

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

If one cannot state a matter clearly enough so that even an intelligent twelve-year-old can understand it, one should remain within the cloistered walls of the university and laboratory until one gets a better grasp of one's subject matter.

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

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.

Love is the invention of a few high cultures ... it is cultural artifact. To make love the requirement of a lifelong marriage is exceedingly difficult, and only a few people can achieve it. I don't believe in setting universal standards that a large proportion of people can't reach.

We will be a better country when each religious group can trust its members to obey the dictates of their own religious faith without assistance from the legal structure of the country.