The time was fast approaching when Earth, like all mothers, must say farewell to her children.

It is not easy to see how the more extreme forms of nationalism can long survive when men have seen the Earth in its true perspective as a single small globe against the stars.

Some things have eternal value, and compassion is one of them. I hope we never lose that. Compassion for humans as well as animals.

Now I'm a scientific expert; that means I know nothing about absolutely everything.

The best proof that there's intelligent life in the universe is that it hasn't come here.

If man can live in Manhattan, he can live anywhere.

I've been saying for a long time that I'm hoping to find intelligent life in Washington.