see the large groups of facts, in their broad relations as well as in
their inner structure, finally gave us the concept and vision of
integration which now fits man as a live unit and transformer of energy
into the world of fact and makes him frankly a consciously integrated
psychobiological individual and member of a social group.

It is natural enough that man should want to travel on the road he knows
and likes best. The philosopher uses his logic and analysis and
synthesis. The introspectionist wants to get at the riddle of the
universe by crawling into the innermost depth of his own self-scrutiny,
even at the risk--to use a homely phrase--of drawing the hole in after
him and losing all connection with the objective world. The physicist
follows the reverse course. He gives us the appreciation of the
objective world around and in us. The chemist follows out the analytic
and synthetic possibilities of his atoms and elements, and the biologist
the growth and reproduction and multiplication of cells. Each sees an
open world of possibilities and is ready to follow as far as facts will
carry and as far as the imagination will soar. Each branch has created
its rules of the game culminating in the concept of objective science,
and the last set of facts to bring itself under the rules of objective
science, and to be accepted, has been man as a unit and personality.

The mind and soul of man have indeed had a hard time. To this day,
investigators have suffered under the dogma that mind must be treated as
purely subjective entity, something that can be studied only by
introspection, or at least only with ultra-accurate instruments--always
with the idea that common sense is all wrong in its psychology.
Undoubtedly it was, so long as it spoke of a mind and soul as if what
was called so had to be, even during life, mysterious and inaccessible,
something quite different from any other fact of natural-history study.