Marcus Tullius Cicero quotes (Ancient Roman Lawyer, Writer, Scholar, Orator and Statesman, 106 BC-43 BC)
Rene Descartes quotes (French Mathematician, Philosopher and Scientist, 1596-1650)
Buddha quotes (Hindu Prince Gautama Siddharta, the founder of Buddhism, 563-483 B.C.)
Mahatma Gandhi quotes (Indian Philosopher, internationally esteemed for his doctrine of nonviolent protest, 1869-1948)