Logical positivism

assertion that only statements verifiable through empirical observation are meaningful

English philosopher

German philosopher (1882-1936)

former group of philosophers and scientists

Austrian economist, philosopher and sociologist (1882–1945)

German–American philosopher

German philosopher (1905–1997)

Austrian physicist and mathematician (1883-1953)

In metaphysics, phenomenalism is the view that physical objects cannot justifiably be said to exist as "things-in-themselves", but only as perceptual phenomena or sensory stimuli (e.g. redness, hardness, softness, sweetness, etc.) situated in time and in space. In particular, some forms of phenomenalism reduce all talk about physical objects in the external world to talk about bundles of sense data.

American philosopher (1901-1985)

Verificationism, also known as the verification principle or the verifiability criterion of meaning, is a doctrine in philosophy which asserts that a statement is cognitively meaningful only if it is empirically verifiable (can be confirmed through experience) or an analytic truth (true by virtue of its definition or logical form). Typically expressed as a criterion of meaning, it rejects traditional statements of metaphysics, theology, ethics and aesthetics as meaningless in terms of conveying truth value or factual content, reducing them to emotive expressions or "pseudostatements" that are

former group of philosophers and scientists

philosophical book by A. J. Ayer

linguistic school of thought