Aristotle (384–322 BCE)
A student of Plato and teacher of Alexander the Great, Aristotle was one of the most influential
philosophers in history. He made groundbreaking contributions to logic, metaphysics, ethics, politics,
and science. His concept of the “Golden Mean” emphasized balance in moral behavior, and his
writings laid the foundation for Western philosophy and scientific thought.
Plato (427–347 BCE)
Plato was a student of Socrates and the teacher of Aristotle. He is best known for his theory of
Forms, which suggests that the material world is only a shadow of a higher, perfect reality. His
famous work The Republic explores justice, the ideal state, and the role of philosopher-kings. His
Academy in Athens became a model for future educational institutions.
Socrates (469–399 BCE)
Often called the father of Western philosophy, Socrates is famous for his Socratic method—asking
deep questions to stimulate critical thinking. He believed in seeking wisdom and living a virtuous life.
He was sentenced to death for allegedly corrupting Athenian youth and died by drinking poison
hemlock, as recorded by Plato.
Voltaire (1694–1778)
A key figure of the Enlightenment, Voltaire was a French philosopher and writer known for his sharp
wit and advocacy for freedom of speech, religious tolerance, and reason. His satirical novel Candide
criticizes blind optimism and corruption in society. He was often in conflict with authorities due to his
outspoken views.
René Descartes (1596–1650)
A French philosopher and mathematician, Descartes is best known for his statement “Cogito, ergo
sum” (“I think, therefore I am”). He emphasized rationalism and the importance of doubt in
philosophy. His work laid the groundwork for modern science and Cartesian dualism, the idea that
the mind and body are separate entities.
Immanuel Kant (1724–1804)
Kant was a German philosopher whose work Critique of Pure Reason revolutionized philosophy. He
argued that knowledge is shaped by both experience and innate structures of the mind. His ethical
theory, known as the “categorical imperative,” emphasizes that moral actions should be guided by
universal principles.
A student of Plato and teacher of Alexander the Great, Aristotle was one of the most influential
philosophers in history. He made groundbreaking contributions to logic, metaphysics, ethics, politics,
and science. His concept of the “Golden Mean” emphasized balance in moral behavior, and his
writings laid the foundation for Western philosophy and scientific thought.
Plato (427–347 BCE)
Plato was a student of Socrates and the teacher of Aristotle. He is best known for his theory of
Forms, which suggests that the material world is only a shadow of a higher, perfect reality. His
famous work The Republic explores justice, the ideal state, and the role of philosopher-kings. His
Academy in Athens became a model for future educational institutions.
Socrates (469–399 BCE)
Often called the father of Western philosophy, Socrates is famous for his Socratic method—asking
deep questions to stimulate critical thinking. He believed in seeking wisdom and living a virtuous life.
He was sentenced to death for allegedly corrupting Athenian youth and died by drinking poison
hemlock, as recorded by Plato.
Voltaire (1694–1778)
A key figure of the Enlightenment, Voltaire was a French philosopher and writer known for his sharp
wit and advocacy for freedom of speech, religious tolerance, and reason. His satirical novel Candide
criticizes blind optimism and corruption in society. He was often in conflict with authorities due to his
outspoken views.
René Descartes (1596–1650)
A French philosopher and mathematician, Descartes is best known for his statement “Cogito, ergo
sum” (“I think, therefore I am”). He emphasized rationalism and the importance of doubt in
philosophy. His work laid the groundwork for modern science and Cartesian dualism, the idea that
the mind and body are separate entities.
Immanuel Kant (1724–1804)
Kant was a German philosopher whose work Critique of Pure Reason revolutionized philosophy. He
argued that knowledge is shaped by both experience and innate structures of the mind. His ethical
theory, known as the “categorical imperative,” emphasizes that moral actions should be guided by
universal principles.
