“I incline to the quantum mechanical view in this matter. My theory is that your cat is not lost, but that his waveform has temporarily collapsed and must be restored. Schrödinger. Planck. And so on." -- Dirk Gently”

“You know,' he said, sitting back, reflectively, 'it's at times like this that you kind of wonder if it's worth worrying about the fabric of space-time and the causal integrity of the multidimensional probability matrix and the potential collapse of all waveforms in the Whole Sort of General Mish Mash and all that sort of stuff that's been bugging me.”

“There was a point to this story, but it has temporarily escaped the chronicler's mind.”

“I don't accept the currently fashionable assertion that any view is automatically as worthy of respect as any equal and opposite view. My view is that the moon is made of rock. If someone says to me 'Well, you haven't been there, have you? You haven't seen it for yourself, so my view that it is made of Norwegian Beaver Cheese is equally valid' - then I can't even be bothered to argue. There is such a thing as the burden of proof, and in the case of god, as in the case of the composition of the moon, this has shifted radically. God used to be the best explanation we'd got, and we've now got vastly better ones. God is no longer an explanation of anything, but has instead become something that would itself need an insurmountable amount of explaining. So I don't think that being convinced that there is no god is as irrational or arrogant a point of view as belief that there is. I don't think the matter calls for even-handedness at all.”

“Dirk was, for one of the few times in a life of exuberantly prolific loquacity, wordless.”

“Sir Isaac Newton, renowned inventor of the milled-edge coin and the catflap!""The what?" said Richard."The catflap! A device of the utmost cunning, perspicuity and invention. It is a door within a door, you see, a ...""Yes," said Richard, "there was also the small matter of gravity.""Gravity," said Dirk with a slightly dismissed shrug, "yes, there was that as well, I suppose. Though that, of course, was merely a discovery. It was there to be discovered." ... "You see?" he said dropping his cigarette butt, "They even keep it on at weekends. Someone was bound to notice sooner or later. But the catflap ... ah, there is a very different matter. Invention, pure creative invention. It is a door within a door, you see.”

“A cup of tea would restore my normality."[Hitchhiker's Guide to the Galaxy, Screenplay]”