As an instance of the mind affecting the body, this philosopher cited the fear that a man might feel crossing a tree-trunk over a gorge. According to tradition, this philosopher illustrated the faculty of “prehension” by putting a wolf within sight of a caged sheep, which, though in no danger, died of stress. This philosopher argued that the contingent universe requires a “necessary existent” (15[1])in a unique proof of the existence of God. (15[1])This philosopher demonstrated the existence of the (*) soul with an “argument from abstraction,” which considers an adult man who pops into existence and receives no data from his (10[1])senses. That thought experiment is this philosopher’s “Floating Man.” For 10 points, name this Islamic philosopher who authored the philosophical Book of Healing, as well as the Canon of Medicine. ■END■