Very strange people, physicists - in my experience the ones who aren't dead are in some way very ill.

A learning experience is one of those things that says, 'You know that thing you just did? Don't do that.

The Hitch Hiker's Guide has not been an opera. It has however been a tapestry, if you count a woven bath towel as a tapestry.

Just supposing," he said, "just supposing" --he didn't know what was coming next, so he thought he'd just sit back and listen--"that there was some extraordinary way in which you were very important to me, and that, though you didn't know it, I was very important to you, but it all went for nothing because we only had five miles and I was a stupid idiot at knowing how to say something very important to someone I've only just met and not crash into lorries a the same time, what would you say..." He paused, helplessly, and looked at her. "I should do.

We’ll meet the meat.

Trillian had come to suspect that the main reason [Zaphood] had had such a wild and successful life was that he never really understood the significance of anything he did.

Flying is learning how to throw yourself at the ground and miss.