The human soul does not just give being to this body, but it gives being to another as other by its knowledge.
Given that the soul causes knowledge, why do we say that knowledge is being to another as other? Knowledge differs from eating and digestion in this: eating destroys the distinct existence of the other when it assimilates it to ourselves; knowledge preserves the distinct existence of something when it assimilate it into ourselves. To be eaten an digested involves being another as itself; to be known is to be another as another. The cow within me as eaten is me, the cow within me as known is a cow.
Knowledge differs from reproduction in this: the child who is conceived is the material unity of his two parents, and so is partly from one source and partly from another the way that a rose is part stem and part flower. But the known is not from the object and the mind in this way. Mind is wholly within the known just as the known is wholly within mind. The mind is wholly caused by the object even while the object can have no existence apart from mind as an object. Reproduction happens when the living thing acts on another in virtue of conjoined material principles in both, but knowledge happens according to a conjoining of immaterial principles.