 Having rejected atomism, with its central claim that sensible bodies must be aggregates of a finite number of conceptually indivisible parts, Avicenna must explain and defend his preferred account of bodies. Avicenna adopts a modified form of Aristotle’s theory of the continuity of bodies. Aristotle himself had provided no fewer than three different accounts of continuity (Gk. sunecheia, Ar. ittiṣāl):