intended for students of Zürich University who sought the
author's practical counsel rather than a scientific disquisition.

Two earlier papers, written in 1919-20, namely "Instinct
and the Unconscious" and "The Psychological Foundations
of the Belief in Spirits", are technical papers of the highest
significance; they are magnificent examples of Jung's
psychological common sense. Both the fields dealt with in
these two essays have for years been the happy hunting-
ground of pseudo-scientific speculation, and nowhere was there
greater need for a caustic clarity of thought.

The paper on "The Relation of Analytical Psychology to
Poetic Art" was read before a literary society in Zürich,
and this sensitive approach to the intricate problems of art
shows that there can be a valuable liaison between psychology
and art, from which the latter has much to gain and nothing
to fear.

The last six papers of this collection belong to a class by
themselves. They were delivered at three meetings of the
International Congress of Education, 1923-24-25, and deal
with the relation of analytical psychology to educational
problems. It will be seen from these lectures that analytical
psychology has much to contribute towards the solution of
these problems. If educationists would accept Jung as a guide
the causes of child-neurosis would not be sought by analytical
interference in the child's psychology, but rather in the atmos-
phere engendered in the home by the attitude of the parents,
both to the children and to their own problems. In no other
field is Jung's wisdom more urgently needed.

We wish to tender acknowledgment to Dr T. W. Mitchell
for his kind permission to include the three papers published
first in the British Journal of Psychology (Medical Section).
We must also acknowledge indebtedness to the Council of the
Society of Psychical Research for permission to include the
"Psychological Foundations of Belief in Spirits". We have
to thank Messrs Harcourt, Brace and Co., of New York, for

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