Philosopher Quotes
- Peter Singer 1946 -
- Philo 20 - 50
- Pierre Bayle 1647 - 1706
- Pierre Bourdieu 1930 - 2002
- Pierre Charron 1541 - 1603
- Pierre Teilhard de Chardin 1881 - 1955
- Pir Vilayat Khan 1916 - 2004
- Plato 423 - 347
- Plotinus 205 - 270
- Plutarch 46 - 120
- Protagoras 490 - 420
- Pyotr Ouspensky 1878 - 1947
- Quentin Persifor Smith 1952 - 2020
- R. B. Braithwaite 1900 - 1990
- R. Edward Freeman 1951 -
- R.J. Rushdoony 1916 - 2001
- Ralph Cudworth 1617 - 1688
- Ralph Waldo Emerson 1803 - 1882
- Ramakrishna 1836 - 1886
- Ramana Maharshi 1879 - 1950
- Raymond Aron 1905 - 1983
- Raymond Duncan 1874 - 1966
- Raymond Moody 1944 -
- Raymond Smullyan 1919 - 2017
- Rene Descartes 1596 - 1650
- Rene Girard 1923 - 2015
- Richard Price 1723 - 1791
- Richard Rorty 1931 - 2007
- Richard Scott Bakker 1967 -
- Roberto Unger 1947 -
- Rudolf Christoph Eucken 1846 - 1926
- Saint Augustine 354 - 430
- Sam Harris 1967 -
- Sam Keen 1931 -
- Samuel Adams 1722 - 1803
- Samuel Alexander 1859 - 1938
- Sidney Hook 1902 - 1989
- Simone Weil 1909 - 1943
- Sir Alfred Jules "Freddie" Ayer 1910 - 1989
- Socrates 470 - 399