This volume from the Collected Works of C.G. Jung has become known as perhaps the best introduction to Jung's work. In these famous essays he presented the essential core of his system. This is the first paperback publication of this key work in its revised and augmented second edition. The earliest versions of the essays are included in an Appendices, containing as they do the first tentative formulations of Jung's concept of archetypes and the collective unconscious, as well as his germinating theory of types.