Esalen Create Talk0 Category page This page needs content. You can help by adding a sentence or a photo! Add to this page! “Frederic Spiegelberg was a Stanford University professor of religion. A friend of Paul Tillich... Frederic Spiegelberg Pages in category "Esalen" This category contains only the following page. F Frederic Spiegelberg Retrieved from "http://psychology.wikia.com/wiki/Category:Esalen"