All one can really leave one's children is what's inside their heads. Education, in other words, and not earthly possessions, is the ultimate legacy, the only thing that cannot be taken away.

Crash programs fail because they are based on theory that, with nine women pregnant, you can get a baby in a month.

By the year 2000 we will undoubtedly have a sizable operation on the Moon, we will have achieved a manned Mars landing and it's entirely possible we will have flown with men to the outer planets.

We can lick gravity, but sometimes the paperwork is overwhelming.

Nature does not know extinction; all it knows is transformation. ... Everything science has taught me-and continues to teach me-strengthens my belief in the continuity of our spiritual existence after death. Nothing disappears without a trace.

Although I know of no reference to Christ ever commenting on scientific work, I do know that He said, "Ye shall know the truth, and the truth shall make you free." Thus I am certain that, were He among us today, Christ would encourage scientific research as modern man's most noble striving to comprehend and admire His Father's handiwork. The universe as revealed through scientific inquiry is the living witness that God has indeed been at work.

There are flying grandfathers. But I intend to be an orbiting grandfather.