theory Quotes

“Any physical theory is always provisional, in the sense that it is only a hypothesis: you can never prove it. No matter how many times the results of experiments agree with some theory, you can never be sure that the next time the result will not...”

― Stephen Hawking, A Brief History of Time

topic:theory contradiction

“A theory is a good theory if it satisfies two requirements. It must accurately describe a large class of observations on the basis of a model that contains only a few arbitrary elements, and it must make definite predictions about the results of...”

― Stephen Hawking, A Brief History of Time

topic:theory

“The eventual goal of science is to provide a single theory that describes the whole universe.”

― Stephen Hawking, A Brief History of Time

topic:science universe theory

“Everything must be taken into account. If the fact will not fit the theory—let the theory go.”

― Agatha Christie, The Mysterious Affair at Styles

topic:theory

“Philosophy is not a theory but an activity.”

― Ludwig Wittgenstein, Tractatus Logico-Philosophicus

topic:philosophy theory

“Yet if there really is a complete unified theory, it would also presumably determine our actions. And so the theory itself would determine the outcome of our search for it! And why should it determine that we come to the right conclusions from...”

― Stephen Hawking, A Brief History of Time

topic:theory

“Theory and practice sometimes clash. And when that happens, theory loses. Every single time.”

― Linus Torvalds,

topic:reality theory

“If there really is a complete unified theory that governs everything, it presumably also determines your actions. But it does so in a way that is impossible to calculate for an organism that is as complicated as a human being.”

― Stephen Hawking, A Brief History of Time

topic:humanity action theory

“Evolution is a fact, not a theory.”

― Carl Sagan, Cosmos

topic:theory

“Even if there is only one possible unified theory, it is just a set of rules and equations. What is it that breathes fire into the equations and makes a universe for them to describe?”

― Stephen Hawking, A Brief History of Time

topic:universe theory

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