Immanuel Kant was a German philosopher who is widely considered to be a central figure of modern philosophy. He argued that fundamental concepts structure human experience, and that reason is the source of morality. His thought continues to...

As a brilliant, undisciplined, and unconventional thinker, Jean-Jacques Rousseau spent most of his life being driven by controversy back and forth between Paris and his native Geneva. Rousseau first attracted wide-spread attention with his...

David Hume was a Scottish philosopher, historian, economist, and essayist known especially for his philosophical empiricism and scepticism. He was one of the most important figures in the Scottish Enlightenment, and in the history of Wester...

François-Marie Arouet, better known by the pen name Voltaire, was a French Enlightenment writer and philosopher famous for his wit and for his advocacy of civil liberties, including freedom of religion and free trade. Voltaire was a proli...

Gottfried Wilhelm von Leibniz was a German mathematician and philosopher. He occupies a prominent place in the history of mathematics and the history of philosophy. Leibniz developed calculus independently of Isaac Newton, and Leibniz's...

William Penn was an English real estate entrepreneur, philosopher, early Quaker and founder of the Province of Pennsylvania, the English North American colony and the future Commonwealth of Pennsylvania. He was an early advocate of democrac...

Robert Hooke, natural philosopher, inventor, architect, chemist, mathematician, physicist, engineer. Robert Hooke is one of the most neglected natural philosophers of all time. The inventor of, amongst other things, the iris diaphragm in ca...

Baruch Spinoza was a Dutch philosopher of Sephardi/Portuguese origin. By laying the groundwork for the 18th-century Enlightenment and modern biblical criticism, including modern conceptions of the self and the universe, he came to be consid...

John Locke was an English philosopher and physician regarded as one of the most influential of Enlightenment thinkers and known as the "Father of Classical Liberalism". Considered one of the first of the British empiricists, following the t...

The Honourable Robert Boyle was an Irish natural philosopher, noted for his work in physics and chemistry. He was an alchemist; and believing the transmutation of metals to be a possibility, he carried out experiments in the hope of effect...

Blaise Pascal was a French mathematician, physicist, inventor, writer and Catholic philosopher. He was a child prodigy who was educated by his father, a tax collector in Rouen. Pascal's earliest work was in the natural and applied sciences...

René Descartes was a French philosopher, mathematician, physicist, and writer who spent most of his adult life in the Dutch Republic. He has been dubbed the "Father of Modern Philosophy", and much of subsequent Western philosophy is a respo...

Thomas Hobbes of Malmesbury was an English philosopher, best known today for his work on political philosophy. His 1651 book Leviathan established the foundation for most of Western political philosophy from the perspective of social contra...

Galileo Galilei was an Italian polymath: astronomer, physicist, engineer, philosopher, and mathematician. He has been called the "father of observational astronomy", the "father of modern physics", the "father of the scientific method", and...

Sir Francis Bacon achieved fame as an English philosopher, statesman, and essayist. He was knighted in 1603, created Baron Verulam in 1618, and finally created Viscount St Albans in 1621; the peerage titles became extinct upon his death. He...