Great Minds.
Inspiring quotes from the minds of humanity's greatest thinkers.


An agglomeration of ageless wisdom and a labor of love by Layth Barzangi.

Last updated on 24 Aug 2008
Hit 500 quotes mark on 10 Jan 2007!
Hit 600 quotes mark on 01 Sep 2007!



Retrieved a total of 148 authors and 618 quotes.


Adams, John (1735-1826)
Second President of the United States (1797-1801).




al-Ma'arri, Abu-al-Ala (973-1057)
Arabic poet and philosopher.




Allen, Ethan (1738-1789)
American Revolutionary.




Allen, Steve (1921-2000)
American musician, comedian, writer and original host of the The Tonight Show (1953-1957).




Anthony, Susan B. (1820-1906)
American feminist leader and suffragist.




Archer, William (1856-1924)
Scottish critic.




Aristotle (ca. 384-322 B.C.)
Greek philosopher.




Asimov, Isaac (1920-1992)
Russian-born American scientist and prolific writer.




Attenborough, Sir David Frederick (b. 1926)
World renown British broadcaster and naturalist. Widely considered one of the pioneers of the nature documentary, he has written and presented eight major series surveying nearly every aspect of life on Earth.




Bacon, Sir Francis (1561-1626)
English philosopher and statesman, one of the pioneers of modern scientific thought.




Bakunin, Mikhail Aleksandrovich (1814-1876)
Russian anarchist and political theorist.




Baldwin, James A. (1924-1987)
American writer and outspoken critic of racism.




Barker, Dan (b. 1949)
American author and critic, former preacher, co-founded the Freedom From Religion Foundation.




Berry, Matt 
American author and philosopher.




Boorstin, Daniel Joseph (1914-2004)
American historian and writer, Librarian of Congress (1975-1987).




Bradlaugh, Charles (1833-1891)
Atheist writer and member of Parliament.




Branden, Nathaniel (b. 1930)
Canadian psychotherapist and author of psychology books and multiple articles on ethical and political philosophy. Famous for his work on the psychology of self-esteem.




Bukowski, Charles (1920-1994)
American poet and novelist.




Burbank, Luther (1849-1926)
American botanist, horticulturist and pioneer in agricultural science.




Burroughs, John (1837-1921)
American naturalist and writer.




Celsus (c. 2 B.C.)
Greek philosopher.




Channing, William (1810-1884)
American writer and philosopher.




Cioran, Emil M. (1911-1995)
Romanian-born French philosopher.




Clarke, Arthur C. (b. 1917)
British science fiction writer.




Clifford, William Kingdon (1845-1879)
English mathematician and philosopher.




Cohen, Chapman (1868-1954)
British Freethought advocate and writer.




Comte, Auguste (1798-1857)
French philosopher.




Darrow, Clarence Seward (1857-1938)
American lawyer who made a name for himself fighting capital punishment as well as championing the underdog and so-called lost-cause defendants.




Darwin, Charles (1809-1882)
English naturalist, founder of the revolutionary theory of evolution and the principle of common descent through natural selection.




Dawkins, Richard (b. 1941)
East African-born British Zoologist; the Charles Simonyi Professor for the Public Understanding of Science at Oxford University.




de Unamuno, Miguel (1864-1936)
Spanish writer and philosopher.




Dennett, Daniel (b. 1942)
Prominent American philosopher and atheist activist. His research centers on philosophy of mind, philosophy of science and philosophy of biology, particularly as those fields relate to evolutionary biology and cognitive science.




Descartes, René (1596-1650)
French philosopher and mathematician.




Dewey, John (1859-1952)
Prominent American philosopher and educator.




Diderot, Denis (1713-1784)
French philosopher and writer of L'Encyclopédie (1751-1772).




Dillard, Annie (b. 1945)
American author. Pulitzer Prize winner (1975) for Pilgrim at Tinker Creek.




Dostoyevsky, Fyodor (1821-1881)
Russian novelist.




Druyan, Ann (b. 1949)
American author and media producer known for her involvement in many projects aiming to popularize and explain science.




Eco, Umberto (b. 1932)
Italian novelist and philosopher.




Edison, Thomas Alva (1847-1931)
Prolific American inventor, who patented more than a thousand inventions.




Einstein, Albert (1879-1955)
German-born American theoretical physicist whose special and general theories of relativity revolutionized modern thought on the nature of space and time.




Ellis, Albert (b. 1913)
American psychologist and originator of Rational Emotive Behavior Therapy (REBT).




Emerson, Ralph Waldo (1803-1882)
American essayist and poet.




Epicurus (341-270 B.C.)
Greek philosopher.




Ferrer, Francisco (1859-1909)
Spanish crusader against illiteracy, monarchy, militarism, and religion: in a sense the last major European figure executed for heresy, his death was celebrated by Pope Pius X.




Feuerbach, Ludwig von (1804-1872)
German philosopher.




Feynman, Richard P. (1918-88)
American Caltech physicist and Nobel Laureate.




Fouts, Roger (b. 1943)
American professor of psychology, best known for his work teaching sign language to chimpanzees, which he documented in his book Next of Kin.




Franklin, Benjamin (1706-1790)
American public official, writer, scientist.




Freud, Sigmund (1856-1939)
Austrian physician and pioneer psychoanalyst.




Gage, Matilda Joslyn (1826-1898)
American author and women's suffrage activist.




Galilei, Galileo (1564-1642)
Italian astronomer and physicist.




Gardner, Helen H. 
American author, freethinker and advocate of women's equality.




Gautama, Siddhartha (B.C. 563-483)
AKA Gautama Buddha. Philosopher and spiritual teacher from ancient India and the historical founder of Buddhism.




Gilman, Charlotte Perkins (1860-1935)
Prominent American non-fiction writer, short story writer, novelist, commercial artist, lecturer, and social reformer.




Goldman, Emma (1869-1940)
Russian-American anarchist, writer, publisher.




Gould, Stephen Jay (b. 1941)
American paleontologist.




Green, Ruth Hurmence (1915-1981)
"Born-Again Atheist".




Haeckel, Ernst (1834-1919)
Eminent German biologist, naturalist, philosopher, physician, professor and artist.




Haldane, J.B.S. (1892-1964)
British geneticist, evolutionary biologist and one of the founders of population genetics.




Haldeman-Julius, Emanuel (1889-1951)
American socialist reformer and publisher.




Harris, Sam (b. 1967)
American author with active interests in philosophy, religion and neuroscience. His first book "The End of Faith" won the 2005 PEN/Martha Albrand Award.




Hawking, Stephen William (b. 1942)
British scientist, one of the world's leading theoretical physicists, Lucasian professor of mathematics at the University of Cambridge (a post once held by Isaac Newton).




Hayes, Judith 
American author, famous for her long-running Happy Heretic column.




Heinlein, Robert A. (1907-1988)
Influential American science fiction author.




Hitchens, Christopher (b. 1949)
British journalist, author, critic and self-proclaimed political satirist.




Hoffer, Eric (1902-1983)
American philosopher.




Hubbard, Elbert (1856-1915)
American writer and publisher.




Hugo, Victor (1802-1885)
French poet, dramatist, novelist.




Hume, David (1711-1776)
Scottish philosopher and historian, one of the most important figures in the Scottish Enlightenment.




Huxley, Thomas Henry (1825-1895)
British biologist, stront supporter of Darwin's theory of evolution, coined the term 'agnostism'.




Huxley, Aldous Leonard (1894-1963)
British writer and philosopher, one of the leading figures of modern thought.




Huxley, Sir Julian Sorell (1887-1975)
British biologist and author, known for his popularizations of science in books and lectures.




Ingersoll, Robert Green (1833-1899)
American lawyer and lecturer known for his adamant support of scientific and humanistic rationalism.




Jefferson, Thomas (1743-1826)
The third President of the United States (1801-1809), author, scientist, architect, educator, and diplomat, deist, avid separationist.




Kant, Immanuel (1724-1804)
German philosopher, considered by many the most influential thinker of modern times.




King, Stephen (b. 1947)
American author.




Kurtz, Paul (b. 1925)
American Humanist leader.




Lewis, Joseph (1889-1968)
American philanthropist, publisher, atheist, founder of Freethought Press Association.




Locke, John (1632-1704)
English philosopher considered the first of the British Empiricists. His ideas had enormous influence on the development of epistemology and political philosophy, and he is widely regarded as one of the most influential Enlightenment thinkers and contributors to liberal theory.




Lord Byron (1788-1824)
British poet acclaimed as one of the leading figures of the romantic movement.




Lucretius (B.C. 94?-55?)
Roman poet who turned the philosophy of Epicurus into a great philosophical poem, De Return Natura (On the Nature of Things); he sought to free humanity from the fear of death and of the gods, which he considered the main cause of human unhappiness.




Macaulay, Thomas (1800-1859)
English writer and politician.




Madison, James (1751-1836)
The fourth President of the United States (1809-1817).




Martin, Emma (1812-1851)
Early British Freethought Pamphleteer.




Martin, Michael (b. 1932)
Professor of Philosophy, Boston University.




Marx, Karl (1818-1883)
German political philosopher and economist.




McCabe, Joseph (1867-1955)
Former Roman Catholic priest and scholar who renounced his faith and later wrote nearly 250 atheistic and antireligious books.




McCarthy, John (b. 1927)
Prominent American computer scientist famous for his major contributions to the field of Artificial Intelligence, which he coined the term for in 1955.




McGinn, Colin (b. 1950)
British Philosopher best known for his work in the philosophy of mind.




Medawar, Sir Peter Brian (1915-1987)
Brazilian-born British immunologist, Nobel Laureate in medicine (1960).




Mencken, Henry Louis (1880-1956)
American editor and critic.




Meredith, George (1828-1909)
English novelist and poet.




Mill, John Stuart (1806-1873)
British philosopher-economist, who had a great impact on 19th-century British thought, not only in philosophy and economics but also in political science, logic, and ethics.




Myers, Paul Zachary "PZ" (b. 1957)
American biology professor and the author of the science blog Pharyngula. Public critic of intelligent design and the creationist movement.




Nasrin, Taslima (b. 1962)
Bangladeshi writer, secular humanist, feminist; now living under fatwa (Islamic death sentence).




Nehru, Jawaharlal (1889-1964)
Political leader of the Indian National Congress and pivotal figure during the Indian independence movement. Served as the first Prime Minister of the Republic of India. Also a writer, scholar and amateur historian.




Nietzsche, Friedrich Wilhelm (1844-1900)
German philosopher.




O'Casey, Sean (1880-1964)
Irish dramatist whose plays portray the Irish struggle for independence.




O'Hair, Madalyn Murray (1919-1995)
Atheist activist.




Orwell, George (1903-1950)
AKA Eric Arthur Blair. British writer.




Paine, Thomas (1737-1809)
Anglo-American political philosopher, whose writings influenced the American Revolution (1775-1783), the French Revolution (1789-1799) and the freethought movements ever since.




Pascal, Blaise (1623-1662)
French philosopher, mathematician, and physicist.




Poe, Edgar Allan (1809-1849)
American writer.




Porco, Carolyn 
American Planetary Scientist. Leader of the Cassini Science Imaging Team and a lead imaging scientist on the New Horizons Pluto/Kuiper Belt mission.




Rand, Ayn (1905-1982)
American novelist and philosopher.




Randi, James (b. 1928)
Illusionist who exposes the parlor magic techniques of faith healers and others.




Renan, Ernest (1823-1892)
French historian.




Roberts, Stephen 
Atheistic activist.




Roddenberry, Gene (1921-1991)
Science fiction author, creator of Star Trek.




Rose, Ernestine (1810-1892)
American feminist, abolitionist, freethinker, and atheist. One of the major intellectual forces behind the women's rights movement in nineteenth-century America.




Rushdie, Salman (b. 1947)
British-Indian essayist and author of fiction, most of which is set on the Indian subcontinent. Famous for his novel The Satanic Verses, which provoked violent criticism in the Muslim community.




Russell, Bertrand Arthur William (1872-1970)
AKA Third Earl Russell. British philosopher, mathematician, social critic, writer.




Sagan, Carl Edward (1934-1996)
American astronomer, astrobiologist and highly successful popularizer of astronomy, astrophysics, and other natural sciences.




Sakharov, Andrei (1921-1989)
Russian nuclear physicist and human rights activist.




Santayana, George (1863-1952)
Spanish-born U.S.-raised philosopher and poet.




Semple, Etta (1855-1914)
Freethought publisher of The Freethought Ideal.




Seneca the Younger (3 B.C. - 65 A.D.)
Greek philosopher.




Shakespeare, William (1564-1616)
English playwright and poet whose body of works is considered the greatest in English literature.




Shapley, Harlow (1885-1972)
American Astronomer famous for taking part in the "Great Debate" on the nature of nebulae and galaxies and the size of the universe, correctly arguing against the theory that the Sun was at the center of the galaxy.




Shaw, George Bernard (1856-1950)
Irish-born British playwright and a founder of the Fabian Society.




Shelley, Percy Bysshe (1792-1822)
British romantic poet.




Shermer, Michael (b. 1954)
American science writer, founder of The Skeptics Society and editor of its magazine Skeptic.




Smith, George H. (b. 1949)
American philosopher of atheism and libertarianism.




Smoker, Barbara (b. 1923)
President, National Secular Society (1971-).




Spencer, Herbert (1820-1903)
British philosopher who attempted to apply the theory of evolution to philosophy and ethics in his series Synthetic Philosophy.




Spinoza, Baruch (1632-1677)
Dutch philosopher of Portuguese Jewish origin. Considered one of the great rationalists of 17th-century philosophy, and one of Western philosophy's definitive ethicists.




Stanton, Elizabeth Cady (1815-1902)
American feminist and social reformer.




Steinbeck, John Ernst (1902-1968)
American novelist, Nobel Laureate in literature (1962).




Steinem, Gloria (b. 1934)
American feminist and journalist.




Stendhal (1783-1842)
AKA Marie-Henri Beyle. French writer, known for his accurate analysis of his characters' psychology.




Stenger, Victor J. (b. 1935)
American professor of physics, astronomy and philosophy. Known for his work in particle physics and for being an outspoken critic and skeptic of Intelligent Design and other related pseudoscience.




Sullivan, Morris (b. 1956)
American writer, playwright/director/producer.




Teller, Woolsey 
American astronomer, vice-president of the American Association for the Advancement of Atheism.




Thiry, Paul Henri (1723-1789)
AKA Baron d'Holbach. French philosopher and probably the first avowedly atheistic writer since the dominion of Christendom, whose Système de la Nature (The System of Nature) made the first blunt denial of any divine purpose or master plan in nature.




Tolstoy, Leo (1828-1910)
Russian writer, philosopher and social activist.




Twain, Mark (1835-1910)
AKA Samuel Langhorne Clemens. American author, master of humor and sarcasm.




Tyson, Neil deGrasse (b. 1958)
American astrophysicist and the Frederick P. Rose Director of the Hayden Planetarium at the American Museum of Natural History in Manhattan, New York City. Since 2006, he has hosted PBS's educational TV show NOVA scienceNOW.




Vidal, Gore (b. 1925)
American author of novels, stage plays, screenplays, and essays.




Voltaire (1694-1778)
AKA François Marie Arouet. French philosopher and writer whose works epitomize the Age of Enlightenment, often attacking injustice and intolerance.




Washburn, Lemuel Kelley (1846-1927)
American freethinker, aphorist, and public speaker.




Weinberg, Steven (b. 1933)
American physicist and Nobel Laureate.




Whitman, Walt (1819-1892)
American Romantic poet, essayist, journalist, and humanist.




Wollstonecraft, Mary (1759-1797)
English freethinking Deist; early advocate of equality of the sexes.




Wright, Frances (1795-1852)
Pioneering advocate of women's equality; first U.S. woman to question the utility of religion; antislavery activist; advocate of free public schools; editor of Free Enquirer.




Yeats, William Butler (1865-1939)
Irish poet and dramatist.




Zappa, Frank (1940-1993)
American composer, guitarist, singer, film director, and satirist.




Zola, Emile (1840-1902)
Influential French novelist and prominent example of the literary school of naturalism. He was a major figure in the political liberalization of France.