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A theory must be tempered with reality.

Theory helps us to bear our ignorance of facts.

Science is based on the possibility of objectivity, on the possibility of different people checking out for themselves the observations made by others. Without that possibility, there is no empirical principle capable of deciding between different arguments and theories.

Religion is not theory - it is life. It is not intellectual conviction - it is divine humanity, and nothing else.

There is a class, moreover, by whom all these scientific theories, and more are held as ascertained facts, and as the basis of philosophical inferences which strike at the root of theistic beliefs.

We don't regard any scientific theory as the absolute truth.

A valid scientific theory is predictive, verifiable, and replicable. To me, that's beautiful.

Many studies or theories by political scientists fit some subset of cases that a court decides, but literally no theory can account for all of them, particularly when it comes to studying a complex institution like the Supreme Court.

Truth in science can be defined as the working hypothesis best suited to open the way to the next better one.

I believe without exception that theory follows practice. Whenever there is a conflict between theory and practice, theory is wrong. As far as I'm concerned, we make theories for what people have done.