The Sensitive cannot exist without that.

We find nothing that feels, and does not live.

And this Sensitive power is the foundation of the Intellectual, that is, of the Reason; so that, in animate mortals, the Reasoning power is not found without the Sensitive.

But the Sensitive is found without Reason, as in the beasts, and in the birds, and in the fishes, and in any brute animal, as we see.

And that Soul which contains all these powers is the most perfect of all.