TY JOUR TI The problem of language perception in Moritz Schlick's philosophy KW western philosophy of the twentieth century KW analytic tradition KW logical positivism KW "Vienna Circle" KW Moritz Schlick KW language KW cognition KW protocol sentences KW principle of verification KW Ludwig Wittgenstein JO The Journal of Philological Studies AU Kudrin, S.K. PY 2020 IS 5 PB INFRA-M Academic Publishing LLC.