NOTE.

While the Peace Pledge Union does not necessarily agree
with all the opinions expressed in the following pages, it
republishes this Correspondence as a valuable contribution to
the literature of peace and war.

Grateful acknowledgments for permission to republish are
due to Professors Einstein and Freud, Mr. Stuart Gilbert and
The International Institute of Intellectual Co-operation of the
League of Nations, by whom the Correspondence was originally
issued (as No. 2 of their series of Open Letters) in 1933.

London, April, 1939.

Copyright by the Institut International de Coopération
Intellectuelle, 1933.