Many things difficult to design prove easy to performance.

Many things difficult to design prove easy to performance.

Science is organized common sense where many a beautiful theory was killed by an ugly fact.

Science is organized common sense where many a beautiful theory was killed by an ugly fact.

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.

How empty is theory in the presence of fact

How empty is theory in the presence of fact

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.

An ounce of action is worth a ton of theory.

An ounce of action is worth a ton of theory.

He who loves practice without theory is like the sailor who boards ship without a rudder and compass and never read more

He who loves practice without theory is like the sailor who boards ship without a rudder and compass and never knows where he may cast.

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

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

Relativity applies to physics, not ethics

Relativity applies to physics, not ethics