manifestation of a principle. Afterwards, the later Greek sects, returning to a path from which the greatest intellects of Greece had meanwhile strayed, added the moral to the physical world in the conception of Nature. They extended the term till it embraced not merely the visible creation, but the thoughts, observances, and aspirations of mankind. Still, as before, it was not solely the moral phenomena of human society which they understood by Nature, but these phenomena considered as resolvable into some general and simple laws.
Now, just as the oldest Greek theorists supposed that the sports of chance had changed the material universe from its simple primitive form into its present heterogeneous condition, so their intellectual descendants imagined that but for untoward accident the human race would have conformed itself to simpler rules of conduct and a less tempestuous life. To live according to nature came to be considered as the end for which man was created, and which the best men were bound to compass. To live according to nature was to rise above the disorderly habits and gross indulgences of the vulgar to higher laws of action which nothing but self-denial and self-command would enable the aspirant to observe. It is notorious that this proposition—live according to nature—was the sum of the tenets of the famous Stoic philosophy. Now on the subju-
