Robert A. Heinlein

Being a mother is an attitude, not a biological relation.

Robert A. Heinlein

Between two evils, I choose the one I’ve never tried before.

Robert A. Heinlein

Big money isn’t hard to come by. All it costs is a lifetime of single-minded devotion to acquiring it and making it grow into more money.

Robert A. Heinlein

Brainpower is the scarcest commodity and the only one of real value.

Robert A. Heinlein

Climate is what you expect, weather is what you get.

Robert A. Heinlein

I am free, no matter what rules surround me. I am free because I know that I alone am morally responsible for every thing I do.

Robert A. Heinlein

I think the major problem in growing up is to become sophisticated without becoming cynical.

Robert A. Heinlein

I’ll give you an exact definition. When the happiness of another person becomes as essential to yourself as your own, then the state of love exists.

Robert A. Heinlein

If possible, leave room for your enemy to become your friend.

Robert A. Heinlein

If you do not believe that a man will commit murder for one can of tomatoes, then you have never been hungry.

Robert A. Heinlein