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“I make a great difference between people. I choose my friends for their good looks, my acquaintances for their good characters, and my enemies for their good intellects. A man cannot be too careful in the choice of his enemies. I have not got one who is a fool. They are all men of some intellectual power, and consequently they all appreciate me. Is that very vain of me? I think it is rather vain.”
― Oscar Wilde, The Picture of Dorian Gray

“The history of science, like the history of all human ideas, is a history of irresponsible dreams, of obstinacy, and of error. But science is one of the very few human activities â€� perhaps the only one â€� in which errors are systematically criticized and fairly often, in time, corrected. This is why we can say that, in science, we often learn from our mistakes, and why we can speak clearly and sensibly about making progress there.”
― Karl R. Popper, Conjectures and Refutations: The Growth of Scientific Knowledge

“All through my life I've had this strange unaccountable feeling that something was going on in the world, something big, even sinister, and no one would tell me what it was."
"No," said the old man, "that's just perfectly normal paranoia. Everyone in the Universe has that."
"Everyone?" said Arthur.
"Well, if everyone has that perhaps it means something!
Perhaps somewhere outside the Universe we know..."
"Maybe. Who cares?" said Slartibartfast before Arthur got too excited. "Perhaps I'm old and tired," he continued, "but I always think that the chances of finding what out really is going on are so absurdly remote that the only thing to do is to say hang the sense of it and just keep yourself occupied.”
― Douglas Adams, The Hitchhiker’s Guide to the Galaxy

“The game of science is, in principle, without end. He who decides one day that scientific statements do not call for any further test, and that they can be regarded as finally verified, retires from the game.”
― Karl R. Popper