Charles Caleb Colton quotes (English sportsman and writer, 1780-1832)
Milton Friedman quotes (American Economist, b.1912)
Roger Bacon quotes
Plato quotes (Ancient Greek Philosopher He was the world's most influential philosopher. 428 BC-348 BC)
Rodney Dangerfield quotes (American Comedian, 1921-2004)
Peter Singer quotes (Australian Philosopher and Teacher, b.1946)
William Butler Yeats quotes (Irish prose Writer, Dramatist and Poet. Nobel Prize for Literature in 1923. 1865-1939)
Judith S. Marin quotes
John Locke quotes (English Philosopher who made great contributions in studies of politics, government and psychology. 1632-1704)