Criticism of Fakhr Razi’s Theory of Individual Essence

Investigating the nature of body is one of the oldest philosophical interests. Democritus believes that the bodies have an atomic nature. In his atomic theory, he mentioned that the bodies are some combination of infinite atomic articles. Aristotle in an opposite view, believes that the body have a continues nature and he criticized the Democritus view. In Islamic tradition, “Fakhr al-Din Razi” has arguments on proving the atomic nature of body. His argumentations are based on the composition of movement from the infinite parts and composition of time from infinite times and has some geometric arguments. In this research we prove that the argumentations of Razi are fallacious in using the active and passive division and geometric shape contacts.