Stuttgart, Belser Presse, 1967, in-4to, 91 p. + 4 full page etchings, half leather bound, gilt title on red leather spine, gilt name of author on front cover, in matching slipcase. As new.
Artistic German-English parallel edition, illustrated with 4 full page etchings by the famous Swiss artist Hans Erni. Printed in 1000 copies, handnumbered and signed in pencil by the artist on the impressum; one of 850 copies on “Zerkall-Bütten", nr. 822.Second issue. The original English version of the address, delivered by the famous German physicist Werner Heisenberg, on the Hill of Pnyx, Athens, the 3rd of June 1964, was published in «Frontiers of modern scientific philosophy and humanism, the Athens Meeting 1964». Amsterdam 1966.
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