Many things difficult to design prove easy to performance.

Many things difficult to design prove easy to performance.

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

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

Whenever a theory appears to you as the only possible one, take this as a sign that you have neither read more

Whenever a theory appears to you as the only possible one, take this as a sign that you have neither understood the theory nor the problem which it was intended to solve

Conjecture as to things useful, is good; but conjecture as to what it would be useless to know, is very read more

Conjecture as to things useful, is good; but conjecture as to what it would be useless to know, is very idle.

A theory has only the alternative of being right or wrong. A model has a third possibility - it may read more

A theory has only the alternative of being right or wrong. A model has a third possibility - it may be right but irrelevant.

An ounce of action is worth a ton of theory.

An ounce of action is worth a ton of theory.

Relativity applies to physics, not ethics

Relativity applies to physics, not ethics

There is a theory which states that if ever for any reason anyone discovers what exactly the Universe is for read more

There is a theory which states that if ever for any reason anyone discovers what exactly the Universe is for and why it is here it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another that states that this has already happened.

A theory is no more like a fact than a photograph is like a person.

A theory is no more like a fact than a photograph is like a person.