Paine, Thomas (1737-1809)

Paracelsus, Philippus Theophrastus Bombastus/Hohenheim, Philipp Theophrast von (1493-1541)

Parmenides (520-440 B.C.)

Pascal, Blaise (1623-1662)

Passmore, John (1904-1984)

Paulus, S. (ca. 10-ca. 63/67)

Peano, Giuseppe (1858-1932)

Peckham, Johannes (de)/Pecham, John (de) (ca. 1230-1292)

Peirce, Charles Sanders (1839-1914)

Petrarca, Francesco (1304-1374)

Petrus Damiani/Pier Damiani/o, S. (1007-1072)

Petrus de Apona/Aponensis/Pietro d'Abano (1257-1315)

Petrus Venerabilis (1094-1156)

Philo(n) Alexandrinus/Judaeus (13 B.C.-45/50)

Philodemus Gadarensis (ca. 130-ca. 40/35 B.C.)

Photius (820-893)

Piaget, Jean (1896-1980)

Piccolomini, Enea Silvio (1405-1464)

Picus Mirandulensis/Mirandulus, Ioannes/Pico della Mirandola, Giovanni (1463-1494)

Plato (428-348 B.C.)

Plinius Maior, Gaius Secundus (23/24-79)

Plotinus (204-270)

Plutarchus Chaeronensis (ca. 46-ca. 125)

Poincaré, Jules Henri (1860-1934)

Politianus, Angelus/Poliziano,Angelo/Ambrogini, Angelo (1454-1494)

Polycarpus Smyrnaeus, S. (ca. 69-155)

Pomponazzi, Pietro (1462-1525)

Pontanus, Ioannes Iovianus/Pontano, Giovanni Gioviano (ca. 1429-ca.1503)

Popper, Karl Raymund (1902-1994)

Porphyrius Tirius (232/3-304)

Possidius, S. (5^th cent.)

Proclos/us Atheniensis/Diadochus (410-485)

Proudhon, Pierre-Joseph (1809-1865)

Psellos/us, Michael (1018-after 1078)

Ptolomaeus, Claudius (ca. 87-150)

Pufendorf, Samuel von (1632-1694)