Answer: positivism

AnswerCrossword Clue
POSITIVISMIt's a sure thing
positivismthe doctrine that that which is not observable is not knowable
positivismA humanistic religious system founded on this
positivismThe state or quality of being positive
positivismA philosophical system that holds that every rationally justifiable assertion can be scientifically verified or is capable of logical or mathematical proof, and that therefore rejects metaphysics and theism
positivismThe theory that laws are to be understood as social rules, valid because they are enacted by authority or derive logically from existing decisions, and that ideal or moral considerations (e.g., that a rule is unjust) should not limit the scope or operation of the law