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"If it be urged that knowing what is good does not by itself make

a Practically-Wise man but becoming good; still this Wisdom will

be no use either to those that are good, and so have it already,

or to those who have it not; because it will make no difference

to them whether they have it themselves or put themselves under

the guidance of others who have; and we might be contented to be

in respect of this as in respect of health: for though we wish to

be healthy still we do not set about learning the art of healing.

"Furthermore, it would seem to be strange that, though lower in

the scale than Science, it is to be its master; which it is,

because whatever produces results takes the rule and directs in

each matter."

This then is what we are to talk about, for these are the only

points now raised.

Now first we say that being respectively Excellences of different

parts of the Soul they must be choice-worthy, even on the

supposition that they neither of them produce results.