Our inheritance, on the other hand, is the impelling force we obey in setting forth to fight; it tingles in our blood, and nerves the muscles of our arm.

This force of heredity, however, abstractly considered, is blind.

Yet, corporately and individually, we fight with eyes that see.

This supervening faculty, then, of utilizing the light of experience represents a third element in the situation; and, from the standpoint of man's desire to know himself, the supreme element.
The environment, inasmuch as under this conception are included all other forms of life except man, can muster on its side a certain amount of intelligence of a low order.

But man's prerogative is to dominate his world by the aid of intelligence of a high order.