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And in such a case what is one to say? Would you not say that

there was something in the soul bidding a man to drink, and

something else forbidding him, which is other and stronger than

the principle which bids him?

I should say so.

And the forbidding principle is derived from reason, and that

which bids and attracts proceeds from passion and disease?

Clearly.

Then we may fairly assume that they are two, and that they differ

from one another; the one with which a man reasons, we may call

the rational principle of the soul, the other, with which he

loves and hungers and thirsts and feels the flutterings of any

other desire, may be termed the irrational or appetitive, the

ally of sundry pleasures and satisfactions?

Yes, he said, we may fairly assume them to be different.

Then let us finally determine that there are two principles

existing in the soul. And what of passion, or spirit? Is it a

third, or akin to one of the preceding?

I should be inclined to say-akin to desire.