1,085 Quotes by Robert A. Heinlein

Faith strikes me as intellectual laziness, but I don’t argue with it especially as I am rarely in a position to prove that it is mistaken. Negative proof is usually impossible.

But I contend that the disgusting behavior of many of their alleged ‘holy men’ relieves us of any intellectual obligation to take the stuff seriously. No amount of sanctimonious rationalization can make such behavior anything but pathological.

Seems to be a deep instinct in human beings for making everything compulsory that isn’t forbidden.

Math is hard work and it occupies your mind – and it doesn’t hurt to learn all you can of it, no matter what rank you are; everything of any importance is founded on mathematics.

Dad claims that library science is the foundation of all sciences just as math is the key – and we will survive or founder, depending on how well the librarians do their jobs. Librarians didn’t look glamorous to me but maybe Dad had hit on a not very obvious truth.

Nevertheless, once you pick up a stray cat and feed it, you cannot abandon it. Self-love forbids it. The cat’s welfare becomes essential to your own peace of mind – even when it’s a bloody nuisance not to break faith with the cat.

I’m not trying to frighten you, but only a fool makes predictions based on ignorance; I am not that sort of fool.

Random chance was not a sufficient explanation of the Universe – in fact, random chance was not sufficient to explain random chance; the pot could not hold itself.

Love is what still goes on when you’re not horny.