Political theorist who wrote the Communist Manifesto.
Political theorist who wrote the Communist Manifesto.
Renaissance humanist author and philosopher who introduced the Baconian method.
Philosopher who challenged Christianity and traditional morality with books like Beyond Good and Evil, Twilight of the Idols, and Thus Spake Zarathustra.
French philosopher who dealt in reason through meditations, in which he claimed, Je pense donc je suis, or I think therefore I am.
French philosopher and father of Existentialism.
Philosopher of logic, mathematics and the mind who revolutionized the way philosophy was taught at Universities.
Romantic-period English philosopher, poet and illustrator.
Enlightenment philosopher who was declared the Father of Classical Liberalism.
Statistician who has written many influential works in the area of statistical modeling, founding President of the International Astrostatistics Association.
British philosopher and logician who embraced strong pacifist views.
Political theorist who wrote the influential pamphlet Common Sense in 1776.
Philosopher and psychologist who introduced a psychology course in the U.S., and wrote several books on the different branches of psychology.
He was a land speculator, philosopher, writer, American Revolutionary War patriot, and politician known as one of the founders of the U.S. state of Vermont.
Philosopher of New Age studies who focused on Buddhism and Zen as a way to achieve enlightenment.
American philosopher of optimism, individuality, and mysticism.
Ruthless Italian political philosopher who wrote The Prince.
Catholic monk, poet, and philosopher.
German philosopher who opposed the nazi euthanasia program and Jewish genocidal persecution.
German philosopher who said, 'Every man takes the limits of his own field of vision for the limits of the world.'
Scottish philosopher and important contributor to psychology.
