Facts Quote by Stephen Jay Gould

Theory is worth but little, unless it can explain its own phenomena, and it must effect this without contradicting itself; therefore, the facts are…

— Charles Caleb Colton

A fact is a proposition of which the verification by an appeal to the primary sources of our knowledge or to experience is directand…

— Chauncey Wright

Facts and theories are different things, not rungs in a hierarchy of increasing certainty. Facts are the world's data. Theories are structures of ideas…

— Stephen Jay Gould

If facts conflict with a theory, either the theory must be changed or the facts.

— Baruch Spinoza

In general, a fact is worth more than theories in the long run. The theory stimulates, but the fact builds. The former in due…

— Theobald Smith

Generally the theories we believe we call facts, and the facts we disbelieve we call theories.

— Anonymous

Theory helps us to bear our ignorance of facts.

— George Santayana

“It is a common weakness that when concrete facts do not match up with our preconceived theories, we prefer to keep our theories and…

— Raphael Gasson

[Theory is] an explanation that has been confirmed to such a degree, by observation and experiment, that knowledgeable experts accept it as fact. That's…

— David Quammen

A theory is a good theory if it satisfies two requirements: it must accurately describe a large class of observations on the basis of…

— Stephen Hawking

A theory should not attempt to explain all the facts, because some of the facts are wrong

— Francis Crick

A theory is just a mathematical model to describe the observations.

— Karl Popper