Bertrand Russell: A Collection of Critical Essays

abstraction acquaintance Allen & Unwin analysis analyzed argued argument assumption axiom axiom of reducibility belief belongs Bertrand Russell classes concepts construction containing defined definite descriptions denote elements ence entities essay example exist expressions fact false Frege functions of order idea impredicative impredicative definitions individuals inductive inference infinite interpretation kind language logical atomism logically proper names London material objects Math Mathematical Logic meaning mental ments method mind moral naïve realism nature neutral monism notion ontological open sentences paradoxes perceived perception physical possible worlds predicative Principia Mathematica Principles of Mathematics properties propositional attitudes propositional functions quantifiers question range real numbers realism reason reference relation Russell's theory scientific seems sell's sensations sense sense-data sensibilia set theory signify simple particular statements suppose symbols theory of descriptions theory of types thesis tion true truth University variables vicious circle principle words York