Dr. Laurence J. Peter quotes (American "hierarchiologist", Educator and Writer, 1919-1990)
Seneca quotes (Roman philosopher, mid-1st century AD)
Mark Twain quotes (American Humorist, Writer and Lecturer. 1835-1910)
George Bernard Shaw quotes (Irish literary Critic, Playwright and Essayist. 1925 Nobel Prize for Literature, 1856-1950)