Rationalism of Augustine, the Islamic philosopher Avicenna and Jewish philosopher and theologian Maimonides. One notable event in the Western timeline was the philosophy of Thomas Aquinas who attempted to merge Greek rationalism and Christian revelation in the thirteenth-century. Early modern rationalism has its roots in the 17th-century Dutch Republic, with some notable intellectual representatives like Hugo Grotius, René Descartes, and Baruch Spinoza. Descartes was the first of the modern rationalists and has been dubbed the 'Father of Modern Philosophy.' Much subsequent Western philosophy is a response to his writings, which are studied closely to this day. Descartes thought that only knowledge
African philosophy in medicine and philosophy, and subsequently became a professor of philosophy at the universities of Halle Halle and Jena in Germany. Kenyan philosopher Henry Odera Oruka has distinguished what he calls four trends in modern African philosophy: ethnophilosophy, philosophical sagacity, nationalistic–ideological philosophy, and professional philosophy. In fact it would be more realistic to call them candidates for the position of African philosophy, with the understanding that more than one of them might fit the bill. (Oruka later added two additional categories: literary/artistic philosophy, such as the work of literary figures such as Ngũgĩ wa Thiong'o, Wole Soyinka, Chinua Achebe, Okot