As possible causes of unsuitableness for practical life, we
have in the foregoing pages given consideration to
deficiency of interests, weakness of interests and disharmony of interests. In many cases, however, there is
no absence or weakness of practical interests and there
remains only disharmony, i.e., the domination of one
interest over all the others. And indeed, if in the case
of the Don Juan, the miser, the gambler, collector, or
politician, the excess of one interest leads to the serious
neglect of other concerns of life, must not the predominance of the speculative interest have the same effect
upon the philosopher ?
