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

The best measure of a man's honesty isn't his income tax return. It's the zero adjust on his bathroom scale.

We stand now at the turning point between two eras. Behind us is a past to which we can never return...

Open the pod bay doors, Hal.

The more wonderful the means of communication, the more trivial, tawdry, or depressing its contents seemed to be.

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

Until we get rid of religion, we won't be able to conduct the search for God.