hand.--Comparison of man with the highest apes.--Recapitulation of
the history of man's origin and development.--The sequence of
dominant functions.


CHAPTER V

THE HISTORY OF MENTAL DEVELOPMENT AND ITS SEQUENCE OF FUNCTIONS

Mode of investigation.--Intellect.--Sense-perceptions.--Association.
--Inference and understanding.--Rational intelligence.--Modes of mental
or nervous action.--Reflex action, unconscious and comparatively
mechanical.--Instinctive action: The actor is conscious, but guided
by heredity.--Intelligent action.--The actor is conscious, guided by
intelligence resulting from experience or observation.--The will
stimulated by motives.--Appetites.--Fear and other prudential
considerations.--Care for young and love of mates.--The dawn of
unselfishness.--Motives furnished by the rational intelligence:
Truth, right, duty.--Recapitulation: The will, stimulated by ever
higher motives, is finally to be dominated by unselfishness and love
of truth and righteousness.--These rouse the only inappeasable
hunger, and are capable of indefinite development.--Strength of
these motives.--Their complete dominance the goal of human
development.


CHAPTER VI

NATURAL SELECTION AND ENVIRONMENT