Theory Quotes

Most popular theory quotes

It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts.


Observations always involve theory.


Theory helps us bear our ignorance of facts.
That theory is worthless. It isn't even wrong!


In theory, there is no difference between theory and practice. But in practice, there is.
But in science the credit goes to the man who convinces the world, not to the man to whom the idea first occurs.


Facts are a heap of bricks and timber. It is only a successful theory that can convert the heap into a stately mansion.


Science is all those things which are confirmed to such a degree that it would be unreasonable to withhold one's provisional consent.


Science is built up of facts, as a house is built of stones; but an accumulation of facts is no more a science than a heap of stones is a house.

facts science

Science, like life, feeds on its own decay. New facts burst old rules; then newly divined conceptions bind old and new together into a reconciling law.


A new scientific truth does not triumph by convincing opponents and making them see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it.