Criteria Quote by Ludwig von Bertalanffy

The fact that a theory so vague, so insufficiently verifiable, and so far from the criteria otherwise applied in 'hard' science has become a…

— Ludwig von Bertalanffy

Every theory presented as a scientific concept is just that; it's a theory that tries to explain more about the world than previous theories…

— Marvin Harris

The theory of science which permits and encourages the exclusion of so much that is true and real and existent cannot be considered a…

— Abraham Maslow

I'm not sure what theory is, unless it's the pursuit of fundamental questions.

— David Antin

The test of a theory is its ability to cope with all the relevant phenomena, not its a priori 'reasonableness'. The latter would have…

— John Polkinghorne

No particular theory may ever be regarded as absolutely certain.... No scientific theory is sacrosanct...

— Karl Popper

“In this setting modern modern science tends increasingly to become one of two things: either a high form of technology, often with a goal…

— Francis A. Schaeffer

Do not say hypothesis, and even less theory: say way of thinking.

— Georg C. Lichtenberg

There is nothing more practical than a good theory.

— Leonid Brezhnev

The method of science depends on our attempts to describe the world with simple theories: theories that are complex may become untestable, even if…

— Karl Popper

“We have had no polemic interest in writing this book. It would be foolish to deny, however, that our enthusiasm for the present state…

— Peter L. Berger

A theory may be so rich in descriptive possibilities that it can be made to fit any data.

— Phillip Johnson-Laird