"On July 23, 1925... Jonas gave a paper on "Die Gnosis im Johannesevangelium" (Gnosticism in the Gospel according to John). ...In 1928 he submitted his doctoral thesis in philosophy, "Über den Begriff deer Gnosis" (On the Concept of Gnosis), which appeared in print in 1930. The continuation of this work then culminated in the first volume, published in 1934, of the Gnosis und späntantiker Geist: Die mythologische Gnosis... The first half of the second part, already partly in typeset in 1934, did not appear until 1954. ...[T]his part remains a fragment... [S]poradic continuation of work... resulted from the unexpected resurfacing of new Coptic Gnostic texts from , which had been discovered in 1945... Jonas... intervened in the discussion of some of the most important texts in this find, [e.g.,] the ', the ', and the '. His opinion [was] first published in 1962 in... the Journal of Religion... Prior to that, in 1958 Jonas had submitted an English version of his book on Gnosticism, entitled The Gnostic Religion: The Message of an Alien God and the Beginnings of Christianity. As he said in the preface, this followed the point of view of the German work, but was different "in scope, in organization, and in literary intention." Here too, the second edition in 1963 was supplemented to take account of the Nag Hammadi texts. This book, particularly the paperback edition, has had a great influence up until the present day, and is often used as a text for students. In contrast to its German predecessor, it is easier to read, since... Jonas no longer used the "Heidegger style." A less well-known version of his interpretation of Gnosticism was included in 1967 in the third volume of the Encyclopedia of Philosophy."