There are strong grounds for holding that simple egoism
can’t be a basis on which to construct a system of morality
that is satisfactory to the moral consciousness of mankind
in general. In chapter 3.2 and chapter 5 I shall carefully
discuss these reasons. At present I’ll just point to the wide
acceptance of the principle that it’s reasonable for a man
to act in the way that does most for his own happiness. It
is explicitly accepted by leading proponents of intuitionism
and of utilitarianism (which is my name for universalistic
hedonism).