The theory of our modern technic shows that nothing is as practical as theory.
Theory now: concern for truth must not hobble our discussion.
Entropy theory, on the other hand, is not concerned with the probability of succession in a series of items but with the overall distribution of kinds of items in a given arrangement.
The power of a theory is exactly proportional to the diversity of situations it can explain.
Creationists make it sound as though a 'theory' is something you dreamt up after being drunk all night.
I've never really been schooled in music theory. I'm a guitar player, and I attack the guitar in a certain way that it not fully unique to me, but it's more unique that some other people.
I am not limiting myself to theories, so I never question the rightness to my approach.
Any theory, hypothesis, philosophy, sect, creed or institution that fears investigation, openly manifests its own error.
The economists will have to revise their theories of value.
Men and women are not free to love decently until they have analyzed themselves completely and swept away every mystery from sex; and this means the acquisition of a profound philosophical theory based on wide reading of anthropology and enlightened practice.
By having simplified what is known, physicists have been led into realms which as yet are anything but simple. That at some time, they, too, will appear as simple consequences of a theory of which no one has yet dreamed is not a statement of fact. It is a statement of faith.
We don't see very far in the future, we are very focused on one idea at a time, one problem at a time, and all these are incompatible with rationality as economic theory assumes it.
Jealousy is the theory that some other fellow has just as little taste.
The man that created the theory of evolution by natural selection was thrown out by his Dad because he wanted him to be a doctor. GAWD, parents haven't changed much.
If facts conflict with a theory, either the theory must be changed or the facts.
The physics are simple in theory, but in practice they are filled with the possibility for limitless error.
I see the beauty of God's archetypal infinity reflected in the towers of infinities in set theory
My theory is children don't do what you tell them to do, they do what you do. You have to always do the right thing because they follow you.
All of us have theories about the world and about ourselves. We will go to great lengths to prove ourselves right because it keeps the world in our head coherent and understandable.
Partial knowledge is more triumphant than complete knowledge; it takes things to be simpler than they are, and so makes its theory more popular and convincing.