Originally published in 1937, this early work on psychology is both expensive and hard to find in its first edition. It contains Adler s study of the consequences of Platonism and Positivism in psychology. This is a fascinating work and is thoroughly recommended for anyone with an interest in the field of psychology. Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.