as an aid to
achieving those goods which are practicable and attainable: having the Ideal Good as a
pattern we shall more easily know what things are good for us, and knowing them, obtain
them.
[
15]
Now it is true that this argument has a certain
plausibility; but it does not seem to square with the actual procedure of the sciences.
For these all aim at some good, and seek to make up their deficiencies,
1 but they
do not trouble about a knowledge of the Ideal Good. Yet if it were so potent an aid, it is
improbable that all the professors of the arts and sciences should not know it, nor even
seek to discover it.
[
16]
Moreover, it is not easy to see how
knowing that same Ideal Good will help a weaver or carpenter in the practice of his own
craft, or how anybody will be a better physician or general for having contemplated the
absolute Idea. In fact it does not appear that the physician studies even health
2 in the abstract; he studies the health of the human being—or
rather of some particular human being, for it is individuals that he has to cure.
Let us here conclude our discussion of this subject.7.
We may now return to the Good which is the object of our search, and try to find out what
exactly it can be. For good appears to be one thing in one pursuit or art and another in
another: it is different in medicine from what it is in strategy, and so on with the rest
of the arts. What definition of the Good then will hold true in all the arts? Perhaps we
may define it as that for the sake of which everything else is done. This applies to
something different in each different art—to health in the case of medicine,
