Minsky Marvin; Montaigne Michel Eyquem de; Montesquieu Charles-Louis de Secondat; mood and figure; positivism; postmodernism; postulate; potentiality; pragmatic theory of truth; pragmatism; praxis; predicate calculus; predicate constant; prediction; prescriptivism; presocratic philosophers; presupposition; Price Henry Habberly; Price Richard; Prichard H.A.; prima facie; primary qualities; Pringle-Pattison Andrew Seth; private language argument; probability; problematic - assertoric - apodeictic; proof; proposition; propositional calculus; Protagoras of Abdera; Proudhon Pierre-Joseph; prudence; psyche; Pufendorf Samuel; punishment; Putnam Hilary; Pyrrho of Elis; Pythagoras;