If all men were well off, if poverty and disease had been reduced to
their lowest possible point, there would still remain much to be done to
produce a valuable society; and even in the existing world the goods of
the mind are at least as important as the goods of the body. It is
exclusively among the goods of the mind that the value of philosophy is
to be found; and only those who are not indifferent to these goods can
be persuaded that the study of philosophy is not a waste of time.