Every civilization needs the basic sciences to develop in all aspects, including science and culture, industry and technology, etc. Philosophy is one of the core elements of the basic sciences. It focuses on epistemology and ontology. In the process of forming Islamic civilization, the nature and the essence of Islamic philosophy, its necessity, possibility, and impossibility are some of the main challenges of the 21th-century Islamic world. The main purpose of this study was to show the essence of Islamic philosophy based on the specific definitions presented for the philosophy today. The content of Islamic philosophy has been taken from the revelatory sources of Islam. Being affected by the schools of Peripatetic and Illuminationist and T...