Avicennism (Persian: فلسفه سینایی‎) is a school of early Persian Islamic philosophy which began during the middle of the Islamic Golden Age. The school was founded by Avicenna (Ibn Sina), an 11th-century Persian philosopher who attempted to redefine the course of early Islamic philosophy and channel it into new directions. His metaphysical system is built on ingredients and conceptual building blocks which are largely Aristotelian and Neoplatonic, but the final structure is something other than the sum of its parts. For example, while he accepted Neoplatonic emanationist cosmology and the "Amonnian" synthesis of later Aristotelian commentators, he rejected Neoplatonic epistemology and the theory of the pre-existent soul. His metaphysics also owes much to Islamic legal theory and Kalam on m