view to such concrete goods as are attainable and practical, because, with this as a kind of model in our hands, we shall the better know what things are good for us individually, and when we know them, we shall attain them.
Some plausibility, it is true, this argument possesses, but it is contradicted by the facts of the Arts and Sciences; for all these, though aiming at some good, and seeking that which is deficient, yet pretermit the knowledge of it: now it is not exactly probable that all artisans without exception should be ignorant of so great a help as this would be, and not even look after it; neither is it easy to see wherein a weaver or a carpenter will be profited in respect of his craft by knowing the very-good, or how a man will be the more apt to effect cures or to command an army for having seen the ἰδέα itself. For manifestly it is not health after this general and abstract fashion which is the subject of the physician’s investigation, but the health of Man, or rather perhaps of this or that man; for he has to heal individuals.—Thus much on these points.