Janet–Schwartz–Ellenberger: the history of a triangular relationship through their unpublished correspondence (1926–48)

Leonhard Schwartz’s importance in the history of psychology has probably not been fully appreciated, and this article is dedicated to the life and work of the Basel neurologist. It highlights the triangular relationship he maintained for 20 years with Pierre Janet, of whom he was a disciple, and Henri F. Ellenberger, to whom he passed on his passion for Janet’s oeuvre.