He developed his philosophy throughout the course of his life after being deeply moved and concerned by the Metaphysics of Aristotle and studying it for over a year.
In the twelfth century AD, it became influential in Europe, particularly in Oxford and Paris, and affected some notable philosophers such as Thomas Aquinas, Roger Bacon and Duns Scotus.
On the other hand, Islamic Avicennism is based on his later works which is known as "The Oriental Philosophy" (حکمت المشرقیین).
Therefore, philosophy in the Eastern Islamic civilization became close to gnosis and tried to provide a vision of a spiritual universe.
[5] Several Mu’tazilites were contemporaries of Avicenna,[6] while the philosophical programme of Avicenna and his students was criticised by the Muʿtazilī Ḥanafī scholar Ibn al-Malāḥimī (d. 1141), who argued that philosophy in the Greek tradition would be used to justify false beliefs and dilute the prophetic character of Islam.