In degenerating programmes, however, theories are fabricated only in order to accommodate known facts

Intellectual honesty consists in stating the precise conditions under which one will give up one's belief.

Philosophy of science without history of science is empty; history of science without philosophy of science is blind.

Indeed, this epistemological theory of the relation between theory and experiment differs sharply from the epistemological theory of naive falsificationism.

Research programmes, besides their negative heuristic, are also characterized by their positive heuristic.

In degenerating programmes, however, theories are fabricated only in order to accommodate known facts

Man's respect for knowledge is one of his most peculiar characteristics. Knowledge in Latin is scientia, and science came to be the name of the most respectable kind of knowledge.