Regarded by many as the father of modern linguistics, Noam Chomsky has authored over 100 books on varied topics, such as politics, linguistics, and war. A multi-talented personality, Noam Chomsky is considered a popular figure in analytic philosophy. Apart from influencing a wide array of academic fields, he has also contributed to the development of cognitivism.
One of the few personalities known for his disdain of self-promotion, Thomas Sowell is an important American social theorist and economist. Over the years, he has played a prominent role working as a faculty member of many prestigious universities, such as the University of California, Los Angeles (UCLA) and Cornell University.
Henry David Thoreau was an American philosopher, essayist, poet, and naturalist. He is credited with popularizing transcendentalism and simple living. His philosophy of civil disobedience, which was detailed in his essay of the same name, later influenced world-renowned personalities like Leo Tolstoy, Martin Luther King Jr., and Mahatma Gandhi.
Milton Friedman was an American economist. Widely regarded as one of the most influential economists of the 20th century, Friedman was honored with the Nobel Memorial Prize in Economic Sciences in 1976. One of the most influential personalities of the Chicago school of economics, Friedman mentored people like Gary Becker and Thomas Sowell who went on to become leading economists.
B. F. Skinner was an American behaviorist, psychologist, inventor, author, and social philosopher. Skinner, who taught psychology at Harvard University, is credited with founding a school of thought in psychology called the experimental analysis of behavior. Regarded as a pioneer of modern behaviorism, Skinner was named the 20th century's most influential psychologist, according to a survey conducted in June 2002.
William James was an American psychologist and philosopher. Widely regarded as the father of American psychology and one of the most influential American philosophers, James was the first educator in the United States to offer a course in psychology. He is also credited with co-founding a psychological school of thought called functional psychology and establishing a philosophical school called pragmatism.
Abraham Maslow was an American psychologist best remembered for creating an idea in psychology called Maslow's hierarchy of needs. Maslow, who advocated self-actualization, is also credited with co-founding the school of transpersonal psychology. In 1967, he was adjudged Humanist of the Year by the popular non-profit organization, American Humanist Association.
Ralph Waldo Emerson was an American philosopher who led the transcendentalist movement that developed in the eastern United States in the 1820s and 1830s. He is credited with popularizing individualism through his numerous lectures and essays. Emerson influenced many thinkers and writers that followed him; he mentored Henry David Thoreau, who went on to become a leading transcendentalist.
10 Janet Yellen
Economist Janet Yellen has had an illustrious career as an academic and researcher, and has taught at Harvard University and other reputed institutes. After chairing the Federal Reserve for 4 years, she is now the United States Secretary of the Treasury. She is married to Nobel-winning economist George Akerlof.
Psychologist and former Harvard professor Timothy Leary was an advocate of psychedelic drugs. His research experiments included the controversial Concord Prison Experiment and Marsh Chapel Experiment. After being fired from Harvard for his actions, he continued promoting his theories through catchphrases such as “turn on, tune in, drop out.”
Pulitzer Prize-winning author and academic Samantha Power has previously served as the U.S. ambassador to the U.N. She was a war correspondent before she became a professor of public policy at the Harvard Kennedy School. She worked on Barack Obama’s 2008 presidential campaign and infamously called Hillary Clinton "a monster.”
13 Cornel West
Cornel West is an American philosopher, social critic, political activist, and author. He is renowned for drawing intellectual contributions from several traditions, such as Marxism, Christianity, transcendentalism, and neopragmatism. West is credited with authoring many influential books, such as Democracy Matters and Race Matters.
15 Kurt Gödel
Hailed as one of the greatest logicians since Aristotle, Kurt Gödel was Austrian-born American mathematician, logician, and philosopher, who earned international stardom for his incompleteness theorem. Also credited with developing a technique called Gödel numbering, he later started working on Mathematical Platonism, a philosophical theory that failed to attract wide acceptance.
16 Carl Rogers
17 John Dewey
A staunch advocate of progressive education and liberalism, the American philosopher and psychologist was the founder of the University of Chicago Laboratory Schools. John Dewey’s famous writings included The Reflex Arc Concept in Psychology and Human Nature and Conduct. According to him, passion for knowledge and intellectual curiosity were central to a teacher. He called himself a democratic socialist.
Psychologist and Stanford professor Philip Zimbardo is best known for his Stanford prison experiment, which proved how prisoners get abusive due to situational factors. He is also known for his books The Lucifer Effect and The Time Paradox and has received a Lifetime Achievement Award from the American Psychological Foundation.
20 Robert Reich
Economist and University of California, Berkeley professor Robert Reich has also been the U.S. secretary of labor. His rare bone disorder made him a victim of bullies in childhood, but he later won the Rhodes Scholarship to Oxford. His bestselling book Saving Capitalism was made into a Netflix documentary.
Apart from being the MD of Thiel Capital, mathematician and economist Eric Weinstein is also a researcher at Oxford. The Harvard alumnus had quit academia for 20 years before he returned again. He coined the term “intellectual dark web” and works on topics such as gauge theory, risk management, and immigration.
24 Jon Meacham
26 John Rawls
34 Harry Harlow
Lawrence Kudlow began his career as staff economist at the Federal Reserve Bank of New York and then served as financial analyst at Wall Street, before joining the Ronald Reagan administration. Later he became an economic media commentator with National Review, and hosted several shows on CNBC. During the Trump administration, he served as Director of the National Economic Council.
The son of a Japanese-American church minister, Francis Fukuyama was born in Chicago and had virtually no association with the Japanese culture. Educated at Cornell and Harvard, the political economist and academic is associated with Stanford and has penned the iconic book The End of History and the Last Man.
38 Franz Boas
40 Paul Krugman
Economist Paul Krugman, who has taught at Yale, MIT, and Princeton, later won the Nobel Memorial Prize in Economic Sciences, primarily for his work on the new trade theory and economic geography. He has also gained popularity for his op-ed column in The New York Times.
Zora Neale Hurston was an author, anthropologist, and filmmaker. As an African American woman, she often depicted racial issues in the films she made. Her works also reflected her struggles as a black woman. In her early career, she conducted anthropological and ethnographic research and focused more on writing and film-making in her later years.
44 Ethan Allen
As a child, Ethan Allen was fond of deciphering passages from the Bible. He grew up to co-establish Vermont and led the Green Mountain Boys during the American Revolutionary War. After failing to achieve Vermont’s separation from New York, he tried to unite Vermont with Canada.