Jim Pelley quotes
Roger Bacon quotes
Bertrand Russell quotes (English Logician and Philosopher 1872-1970)
Howard Eves quotes
Charles Caleb Colton quotes (English sportsman and writer, 1780-1832)
Henry David Thoreau quotes (American Essayist, Poet and Philosopher, 1817-1862)
Carl Friedrich Gauss quotes (German mathematician 1777-1855)
Aristotle quotes (Ancient Greek Philosopher, Scientist and Physician, 384 BC-322 BC)