Immanuel Kant (22 Apr 1724 - 12 Feb 1804) was a Prussian (German) philosopher, generally regarded as the most major figure in Modern Philosophy, put alongside Plato and Aristotle from Ancient Philosophy. ...

Gottfried Wilhelm von Leibniz (1 Jul 1646 - 14 Nov 1716) was a German philosopher and mathematician, writing primarily in Latin and French, who, independently of Newton, invented Calculus, invented the Binary Number System, and was a contributor to a vast array of subjects, including Philosophy, Physics, Technology,... ...

Baruch Benedict de Spinoza (24 Nov 1632 - 21 Feb 1677) was a Dutch philosopher of a Portuguese Jewish family, whose controversial metaphysical ideas led to cherem (removal) against him from Jewish Society, and his works were banned by the Vatican. ...

George Berkeley (12 Mar 1685 - 14 Jan 1753, and pronounced: "Barkly") was an Anglo-Irish philosopher who advanced a theory of "Immaterialism" and was known as the good "Bishop Berkeley". ...

Plato (428-27 - 348-47 BC) was a major Greek thinker in Ancient Philosophy, a student of Socrates, founder of the first Academy, and with his student Aristotle and the most important modern philosopher Kant, is still considered one of the singularly important thinkers of all... ...

Aristotle (384-322 BC) was a major Greek thinker in Ancient Philosophy, a student of Plato (who was student of Socrates) and a teacher of Alexander the Great. ...

René Descartes (31 Mar 1596 - 11 Feb 1650), also known as Renatus Cartesius and dubbed "Father of Modern Philosophy", was a French philosopher crucial to Western Philosophy in the fields of Metaphysics and Philosophy of Mind, and he was a key figure, with Francis Bacon and others, in the Scientific Revolution. ...

Thomas Hobbes (5 Apr 1588 - 4 Dec 1679) was an English political philosopher, most famous for his book Leviathan (1651), and his view of a "state of nature" to avoid, a life "brutish, nasty and short". ...