Anthony Robbins quotes (American advisor to leaders)
Robert Collier quotes (American motivational author, 1885-1950)
Carl Gustav Jung quotes (Swiss psychiatrist, Psychologist and Founder of the Analytic Psychology, 1875-1961)
Brian Tracy quotes (American television host)
Anne Morrow Lindbergh quotes (American writer and aviation pioneer, 1906-2001)
Friedrich Nietzsche quotes (German classical Scholar, Philosopher and Critic of culture, 1844-1900.)
Socrates quotes (Ancient Greek Philosopher, 470 BC-399 BC)