  Regarding the topic of soul’s essence, Crescas holds a platonic opinion: The soul naturally continues its life after its separation from the body. The reason for this immortality of the soul is that the soul is a spiritual substance with a potential for knowledge. As a spiritual substance, the soul has no opponent between its different parts and any causes of loss. In his proofs that this definition of the soul is right, Crescas critiques the different opinions of Aristotelianism. The main stream of the medieval Arab Aristotelian opinion on this topic (apart from Ibn Sina) is that only human knowledge can survive the death of the body. But there are very different opinions in the Aristotelian school about this subject. An example of this divergence is the opinion of Gersonides, who understands that the knowledge of immaterial law accords the possibility of life after death for the individual. In spite of this, Averroes (as Crescas understand his view) claims that no individual immortal existence is possible after death (all the knowledge of all people returns to its source in the active intellect). In his critique of the Aristotelian opinions, Crescas uses the different  arguments[30] that diverse Aristotelians attack each other with to ultimately refute all Aristotelian opinions.