Every one of us is in the cosmic perspective precious. If a human disagrees with you let him live. In a hundred billion galaxies you will not find another.

If you want to save your child from polio you can pray or you can inoculate. ... Choose science.

It is said that men may not be the dreams of the god but rather that the gods are the dreams of men.

The visions we offer our children shape the future. It matters what those visions are. Often they become self-fulfilling prophecies. Dreams are maps.