In On The Soul 2.1-6, Aristotle differs from Plato in his account of the soul, by tying it to the body. The soul is the life-manifesting capacities that we all have and that distinguish living things, and explain their behaviour. He defines soul and life by reference to the capacities for using food to maintain structure and reproduce, for perceiving and desiring, and for rational thought. Capacities have to be defined by reference to the...