Everybody has their moment of great opportunity in life. If you happen to miss the one you care about, then everything else becomes eerily easy.

Marvin trudged on down the corridor, still moaning. "...and then of course I've got this terrible pain in all the diodes down my left hand side..." "No?" said Arthur grimly as he walked along beside him. "Really?" "Oh yes," said Marvin, "I mean I've asked for them to be replaced but no one ever listens." "I can imagine.

Imagine" he said, "never even thinking, 'We are alone,' simply because it has never occurred to you to think that there's any other way to be.

A theory of the universe that states: If anyone finds out what the universe is for, it will disappear and be replaced by something more bizarrely inexplicable.

You can't possibly be a scientist if you mind people thinking that you're a fool.

Only by counting could humans demonstrate their independence of computers.

You just come along with me and have a good time. The Galaxy's a fun place. You'll need to have this fish in your ear.