George Bernard Shaw (1856–1950), Irish playwright, winner of the 1925 Nobel Prize in Literature, and cofounder of the London School of Economics

Jerry H. Parisella, author of Stop Eating The Animals

Mohandas Gandhi (1869–1948), Hindu advocate of nonviolent civil disobedience

Dr. Colin Campbell, Professor Emeritus of Nutritional Biochemistry, Cornell University

Gautama Buddha (c.563–483 BC), philosopher whose teaching became the foundation of Buddhism

Dr. Neal Barnard, President of the Physicians Committee for Responsible Medicine

Voltaire (1694–1778), French Enlightenment philosopher and advocate of personal liberties

Sir Paul McCartney, iconic songwriter, singer, and musician

Dr. Albert Schweitzer (1875–1965), physician, missionary, and Nobel Prize winner

Fyodor Dostoyevsky (1821–1881), Russian novelist and philosopher