logical positivism

Logical positivism grew from the discussions of Moritz Schlick's Vienna Circle and Hans Reichenbach's Berlin Circle in the 1920s and 1930s. The movement is known for its espousal of verificationism, its admiration for science and technical rigor, and its commitment to the analytic-synthetic distinction. The logical positivists agreed that there are no synthetic a priori propositions, though they disagreed with earlier positivists, such as Ernst Mach, who held that the a priori had no place in science.
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Noun
1. the form of empiricism that bases all knowledge on perceptual experience (not on intuition or revelation)
(synonym) positivism
(hypernym) empiricism, empiricist philosophy, sensationalism
(hyponym) Comtism

Twentieth-century philosophical movement that is known for its determination to police assertive statements in order to reject as meaningless non-empirical statements that can not be verified. This means that logical positivism rejects all statements of metaphysics, theology, ethics and aesthics as nonsense.  The philosophy is represented by the work of Bertrand Russell , (early but not late) Ludwig Wittgensein , A. J. Ayer and the members of the Vienna Circle . Further references on logical positivism.