Denis Waitley quotes (American motivational Speaker and Author of self-help books. b.1933)
Aristotle quotes (Ancient Greek Philosopher, Scientist and Physician, 384 BC-322 BC)
Robert Collier quotes (American motivational author, 1885-1950)
Sun Tzu quotes (Chinese General and Author, b.500 BC)
Ann Landers quotes (American Advice columnist, 1918-2002)
Niccolo Machiavelli quotes (Italian writer and statesman, Florentine patriot, author of 'The Prince', 1469-1527)
Walt Whitman quotes ( Poet, 1819-1892)