It's only a theory.

Only in theory. I intend to initiate a sexeducation course in the school.

That's a nice theory, only it doesn't work.

So without a theory of planetary rings and with only grainy data, you can't have a good theory.

In theory.

And not only that, they make the analogy to relativity theory and cosmology often.

And only one contrary data point can blow your theory out of the water.

It's proved in theory.

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

So we have this special theory of evolution that applies only to organic biology, to us.

The God theory is not just a bad theory.

While an international crime can in theory be committed by any subject of international law, it can in practice be committed only by a State.

It's impossible in theory, but possible in practice.

M Theory

What theory?

In theory, we're thinking, rational human beings.

China s New Reforms in Theory and Practice

In theory, you're as good as dead.

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

Theory and practice should go hand in hand.

Rocs Graph Theory

Graph Theory Tool

What's your theory?

What's that theory?

The theory is

That's mere theory.

It was theory.

An interesting theory.

I have no intention in arguing about your theory.

Theory and empirical evidence

There was a theory.

That is the theory.

Well, what's your theory?

Oh, my theory. Well

What's your theory, Colonel?

I have a theory.

In fact, there is a new theory of autism called the intense world theory, which suggests that the neocortical columns are super columns.

The problems with having a theory is that your theory may be loaded with cognitive biases.

And so the fact that atoms, when you heat them up, only emit light at very specific colors, was one of the key drivers that led to the development of the quantum theory, the theory of the structure of atoms.

It also happens to be male and, in theory immortal.

There's a theory in the service that Etonians are discreet.

Brian Greene on string theory

Superstring theory what is it?

It's just elementary probability theory.

But enough of the theory.