practical man who is concerned with the problems of his day,--that I
have selected the topic for these lectures. It is not merely that many
modern writers assert some general doctrine as to the relativity of
right and wrong. So much was implied, though it was not much laid
stress upon, in the utilitarian doctrine. For the utilitarian conduct
is right according to the amount of happiness it produces: goodness
is relative to its tendency to produce happiness. But a much greater
importance may attach to the assertion of the relativity of morals
when one couples that doctrine with the idea now prevalent of the
indefinitely great changes which the progress of the race brings
about, not only in the social order but also in the structure and
faculties of man himself.

Hence it is not surprising to find that there are at the present day
some writers who ask for nothing less than a revision of the whole
traditional morality, and in whose minds that demand is connected with
the dominant doctrine of progress as it is expressed in the theory of
evolution.

Perhaps we might trace the beginnings of this controversy as to the
content of what is right and what is wrong to an older opposition
in ethical thought, an opposition which especially affects the
utilitarian doctrine--the controversy of Egoism and Altruism. If
we look at these two conceptions of egoism and altruism as the
Utilitarians did, if we regard the conception of egoism as having
to do with one's own personal happiness, and that of altruism as
describing the general happiness, the happiness of others rather than
of oneself, then obviously the questions arise whether the conduct
which produces the greatest happiness of others will or will not also
produce the greatest happiness of the individual agent, and which