David Campbell

“But-! I say! The common conventions of humanity-'
'Are all very well for common people.”
― Wells, H. G. (Herbert George), The Invisible Man

“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.”
― Douglas Adams, Dirk Gently's Holistic Detective Agency

“It sounds plausible enough tonight, but wait until tomorrow. Wait for the common sense of the morning.”
― H.G. Wells, The Time Machine

“What would a Mohammedan vampire do if faced with a cross?”
― Richard Matheson, I Am Legend