The author of these lectures, my friend and pupil Dr. Edoardo Weiss, has expressed a wish that I should send his work on its way with a few words of recommendation. In doing so I am fully aware that such a recommendation is superfluous. The work speaks for itself. All who know how to appreciate the seriousness of a scientific endeavour, how to value the honesty of an investigator who does not seek to belittle or deny the difficulties, and how to take pleasure in the skill of a teacher who brings light into darkness and order into chaos by his exposition, must form a high estimate of this book and share my hope that it will awaken among cultivated and learned circles in Italy a lasting interest in the young science of psycho-analysis.

Sigm. Freud