Rationalism
The first people to talk about rationalism were Marin Mersenne and René Descartes, of the Age of Enlightenment in the 17th and 18th centuries. Other philosophers who are seen as rationalist today include Baruch Spinoza, Gottfried Leibniz and Immanuel Kant. Famous people opposed to this idea were David Hume and John Locke. These opponents favored a view called empiricism.