Karl Popper Quotes

125 Sourced Quotes

The evolution of life on earth, or of human society, is a unique historical process. [From such] a process, we may assume, for example, the laws of mechanics, of chemistry, of heredity and segregation, of natural selection, etc. Its description, however, is not a law but only a singular historical statement.

Karl Popper

Science is not a system of certain, or well-established statements, nor is it a system which steadily advances towards a state of finality.. Like Bacon we might describe our own contemporary science... as consisting of "anticipations, rash and premature," and as "prejudices."

Karl Popper

Every "good" scientific theory is one which forbids certain things to happen; the more a theory forbids, the better it is.

Karl Popper

It is the aim of science to find satisfactory explanations, of whatever strikes us as being in need of explanation.

Karl Popper

Knowledge consists in the search for truth — the search for objectively true, explanatory theories.

Karl Popper