Top 41 Quotes by Robert A. Heinlein

A society that gets rid of all its troublemakers goes downhill.

Being right too soon is socially unacceptable.

For me, politeness is a sine qua non of civilization.

You can have peace. Or you can have freedom. Don't ever count on having both at once.

Theology is never any help; it is searching in a dark cellar at midnight for a black cat that isn't there. Theologians can persuade themselves of anything.

I never learned from a man who agreed with me.

Yield to temptation. It may not pass your way again.

Everything is theoretically impossible, until it is done.

Never underestimate the power of human stupidity.

To be matter-of-fact about the world is to blunder into fantasy - and dull fantasy at that, as the real world is strange and wonderful.