This wonderful treatise was first published in England several years
ago, under the title of "_Have You a Strong Will_?" and has run
through several editions there. In its original form, it was printed
in quite large type, double-leaded, and upon paper which "bulked out"
the book to quite a thick volume. Some copies have been sold in
America, but the price which dealers were compelled to charge for it,
in its original shape, prevented the wide circulation that it merited,
and which its author undoubtedly desired for it, for it seems to
have been a labor of love with him, the interest of the race in his
wonderful theories evidently being placed above financial returns by
Mr. Leland. Believing that the author's ideas and wishes would be well
carried out by the publication of an American edition printed in the
usual size type (without the expedient of "double-leading" unusually
large type in order to make a large volume), which allows of the book
being sold at a price within the reach of all, the publisher has
issued this edition along the lines indicated.

The present edition is identical with the original English edition
with the following exceptions:

(1) There has been omitted from this edition a long, tiresome chapter
contained in the original edition, entitled "On the Power of the Mind
to master disordered Feelings by sheer Determination. As Set forth by
Immanuel Kant in a letter to Hufeland," but which chapter had very
little to say about "the power of the mind," but very much indeed
about Hygiene, Dietetics, Sleep, Care of Oneself in Old Age,
Hypochondria, Work, Exercise, Eating and Drinking, Illness, etc.,
etc., from the point of view of the aged German metaphysician, which
while interesting enough in itself, and to some people, was manifestly
out of place in a book treating upon the development of Mental