If you can have everything at fifty that you wanted when you were fifteen, you're happy.

No matter how we defend ourselves against the outside we're always licked by something from the inside. Ther's no defense against betrayal, and we all betray ourselves.

Eight, sir; seven, sir; Six, sir; five, sir; Four, sir; Three, sir; Two, sir; one! Tenser, said the Tensor. Tenser, said the Tensor. Tension, apprehension, And dissension have begun.

Millions for nonsense, but not one cent for entropy.

Gully Foyle is my name And Terra is my nation Deep space is my dwelling place The stars my destination

The test of intellect is the refusal to belabor the obvious.

It's obvious we can't all be a Gully Foyle, but most of us energize at such a low level, so far short of our real capabilities, we could all be more, do more.