A delightful theory. A dangerous theory.

And that theory, we think, is String Theory.

The God theory is not just a bad theory.

Number theory is the theory of the positive integers.

The God theory is not just a bad theory.

In theory, no prime number is not a theory.

String theory, we think, is a theory of everything.

My theory?

What theory?

Is this proposition true? Is this theory a good theory?

The first development of set theory was a naive set theory.

And deterrence theory is a very simple theory of human behavior

Social Learning Theory .

'Theory of mind'

Here's Andy's theory.

The Quantum Theory

The quantum theory

Oh, my theory.

What's your theory?

What's that theory?

That's mere theory.

Number theory Farisi made a number of important contributions to number theory.

It was begun with the invention of relativity theory and quantum theory.

If you think you understand quantum theory, you don't understand quantum theory.

We need a higher theory, and that's where string theory comes in.

But Keynes s theory was incomplete his was a theory of employment, interest, and money. It was not a theory of prices.

Their theory is called BET theory, after the initials in their last names.

Using Galois theory, certain problems in field theory can be reduced to group theory, which is in some sense simpler and better understood.

It's only a theory.

That is the theory.

Theory and empirical evidence

That was the theory.

But my theory states

There was a theory.

Well, what's your theory?

I have a theory.

A theory of truth for a language can serve as a theory of meaning.

One time, Einstein's theory is proven to be wrong, the whole theory is wrong.

In theory, there is no difference between theory and practice. But, in practice, there is.

In theory, there is no difference between theory and practice. But, in practice, there is.

Conformal field theory has important applications in string theory, statistical mechanics, and condensed matter physics.

His research interests include string theory, quantum field theory, quantum statistical mechanics and quantum cosmology.

They have applications in many areas of mathematics, including Galois theory, invariant theory, group theory, combinatorics, as well as further applications outside mathematics, including general relativity.

Brian Greene on string theory

Emily Levine's theory of everything