Moritz Schlick Professions : Philosopher Born : April 14, 1882 Died : June 22, 1936 Browse All Authors Famous Quotes by Moritz Schlick The meaning of the presupposition is the method of verification… we know the meaning of the statement if we know the conditions under which the statement is true or false. Moritz Schlick true-or-false method knows Similar Authors F. H. Bradley philosopher Irving Copi philosopher Ivan Ilyin philosopher Ivan Illich philosopher Bion of Borysthenes philosopher Bonaventure philosopher All Authors