SOCRATES: Good words, good Polus, as I may say in your own peculiar style; but if you have any questions to ask of me, either prove that I am in error or give the answer yourself.
POLUS: Very well, I am willing to answer that I may know what you mean.
SOCRATES: Do men appear to you to will that which they do, or to will that further end for the sake of which they do a thing? when they take medicine, for example, at the bidding of a physician, do they will the drinking of the medicine which is painful, or the health for the sake of which they drink?
POLUS: Clearly, the health.
SOCRATES: And when men go on a voyage or engage in business, they do not will that which they are doing at the time; for who would desire to take the risk of a voyage or the trouble of business?—But they will, to have the wealth for the sake of which they go on a voyage.
POLUS: Certainly.
SOCRATES: And is not this universally true? If a man does something for the sake of something else, he wills not that which he does, but that for the sake of which he does it.
POLUS: Yes.
SOCRATES: And are not all things either good or evil, or intermediate and indifferent?
POLUS: To be sure, Socrates.