The Twentieth Century to Today · School
Logical Positivism
The Vienna Circle held that a meaningful proposition is either empirically verifiable or a logical truth; metaphysics is meaningless.
Representative figures · 2
Ludwig Wittgenstein维特根斯坦
He changed philosophy twice: the Tractatus says language pictures the world and whereof one cannot speak one must be silent; the Investigations say meaning is use and philosophy is therapy for the diseases language causes.
Rudolf Carnap卡尔纳普
Leading figure of the Vienna Circle: meaningful propositions must be verifiable, metaphysics consists of meaningless pseudo-propositions, and philosophy is the logical syntax of the language of science.