I never once made a discovery ... I speak without exaggeration that I have constructed three thousand different theories in read more

I never once made a discovery ... I speak without exaggeration that I have constructed three thousand different theories in connection with the electric light ... Yet in only two cases did my experiments prove the truth of my theory.

Life is so unlike theory.

Life is so unlike theory.

How empty is theory in the presence of fact

How empty is theory in the presence of fact

It is the theory that decides what can be observed

It is the theory that decides what can be observed

A young boy is a theory, an old man is a fact.

A young boy is a theory, an old man is a fact.

You have to know you can first. How comes later.

You have to know you can first. How comes later.

Let me give you a definition of ethics: It is good to maintain and further life it is bad to read more

Let me give you a definition of ethics: It is good to maintain and further life it is bad to damage and destroy life.

It is curious - curious that physical courage should be so common in the world, and moral courage so rare

It is curious - curious that physical courage should be so common in the world, and moral courage so rare

You cannot run a business, or anything else, on a theory.

You cannot run a business, or anything else, on a theory.