him by workers in many other fields of science. The biologist may have
valuable suggestions to make touching the impulses and instincts of man.
The psychologist treats of the same, and exhibits the work of the
intellect in ordering and organizing the impulses. He studies the
phenomena of desire, will, habit, the formation of character. The
anthropologist and the sociologist are concerned with the codes of
communities and with the laws of social development. The fields of
economics, politics and comparative jurisprudence obviously march with
that cultivated by the student of ethics.

18. THE PHILOSOPHER AS MORALIST.--In all these sciences at once it is not
possible for the moralist to be an adept. The mass of the material they
furnish is so vast that the ethical writer who starts out to master it in
all its details may well dread that he may be overcome by senility before
he is ready to undertake the formulation of an ethical theory.

It does not follow, however, that he should leave to those who occupy
themselves professionally with any of these fields the task of framing a
theory of morals. He must have sufficient information to be able to
select with intelligence what has some important bearing upon the problem
of conduct, but there are many details into which he need not go. It is
well to note the following points:

(1) A multitude of details may be illustrative of a comparatively small
number of general principles. It is with these general principles that
the moralist is concerned. The anthropologist may regard it as his duty
to spend much labor in the attempt to discover why this or that act, this
or that article of food, happens in a given community to be taboo to
certain persons. The student of ethics is not bound to take up the
detailed investigation of such matters. Human nature, in its general