At the time I wrote this book it never occurred to me that more than two million
copies would be sold in various hardcover editions and that it would one day
attract a vast new readership through a paperback edition such as this. Frankly,
however, my gratitude for this event is not from the viewpoint of books sold, but
in terms of the many persons to whom I have been privileged to suggest a
simple, workable philosophy of living.