chology, and the variety of subjects from which the data are brought
together is perhaps the best justification for the claim that the treatise
is not in any one of these subjects, nor merely a mosaic of them, but
is actually and vitally psychology, in which all human sciences find
their meeting point.

In the fourth place, the method of presentation is dogmatic. In
fact, it is intentionally so, and its real imperfection in this respect
lies in the fact that it falls away, in various places, from this level.
The full justification for this dogmatic method will be found in the
final chapter of the volume. The author has no doctrines which
he wishes to "put over." If the presentation stirs the reader to
lively questioning and opposition, it will lead him to further critical
observation and evaluation of data and theories in this field: and
so the real purpose of the text will have been accomplished.

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