It is a well-known fact that those people who must want to rule people are, ipso facto, those least suited to do it... anyone who is capable of getting themselves made President should on no account be allowed to do the job.

Bistromathics itself is simply a revolutionary new way of understanding the behavior of numbers. Just as Einstein observed that space was not an absolute but depended on the observer's movement in space, and that time was not an absolute, but depended on the observer's movement in time, so it is now realized that numbers are not absolute, but depend on the observer's movement in restaurants.

If there was one thing life had taught her it was that there are times when you do not go back for your bag and times when you do. It had yet to teach her to distinguish between the two types of occasion.

Time is the worst place, so to speak, to get lost in, as Arthur Dent could testify, having been lost in both time and space a good deal. At least being lost in space kept you busy.

Zaphod felt he was teetering on the edge of madness and wondered if he shouldn't just jump over and have done with it.

He was a dreamer, a thinker, a speculative philosopher... or, as his wife would have it, an idiot.

If they don’t keep exercising their lips, he thought, their brains start working.