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.

In scientific work, those who refuse to go beyond fact rarely get as far as fact.

In scientific work, those who refuse to go beyond fact rarely get as far as 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.

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

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

In theory there is no difference between theory and practice. In practice there is.

In theory there is no difference between theory and practice. In practice there is.

A purpose, an intention, a design, strikes everywhere the careless, the most stupid thinker

A purpose, an intention, a design, strikes everywhere the careless, the most stupid thinker

Relativity applies to physics, not ethics

Relativity applies to physics, not ethics

A designer knows he has achieved perfection not when there is nothing left to add, but when there is nothing read more

A designer knows he has achieved perfection not when there is nothing left to add, but when there is nothing left to take away.rn

In most people's vocabularies, design means veneer. It's interior decorating. It's the fabric of the curtains and the sofa. But read more

In most people's vocabularies, design means veneer. It's interior decorating. It's the fabric of the curtains and the sofa. But to me, nothing could be further from the meaning of design.