Positivism

Positivism is the name for (at least) two philosophical directions. They have in common the idea of a science without theology or metaphysics, based only on facts about the physical / material world.

• The older positivism is based on the philosophical thinking of Auguste Comte in the 19th century.
• The newer logical positivism was founded in 1920s by the Vienna Circle.

Positivism is also the name of a legal view, usually called legal positivism. Against natural law, it claims that a legal system can be defined independently of evaluative terms or propositions. Sometimes legal positivism is also understood as the view that the law must be obeyed, whatever its content. The late Carlos Nino used to distinguish between these two varieties by calling the former 'methodological' and the latter 'ideological', claiming that only the first was philosophically defensible.