On the occasion of the 75th birthday of Ernst Ulrich von Weizsäcker this unique anthology presents thought-provoking texts from 1970 to 2013, spanning several disciplines and combining science and practice. Among them are three Reports to the Club of Rome that Weizsäcker lead-authored, a new university curriculum system to promote interdisciplinary studies and a proposal for a five-fold increase in resource productivity, which would make it possible to shut down nuclear and fossil power plants, ...