John McCarthy

He who refuses to do arithmetic is doomed to talk nonsense.

An extreme optimist is a man who believes that humanity will probably survive even if it doesn't take his advice.

If a person can be said to have the wrong attitude, there is no need to pay attention to his arguments.

I'm a big action junkie. I grew up on the '80s action movies - the bad ones and the good ones.

I don't make much distinction between being a stand-up comic and acting Shakespeare - in fact, unless you're a good comedian, you're never going to be able to play Hamlet properly.

It's good to like yourself, and that only comes from hard work, from doing. But vanity is dangerous; it can trip you badly.