Abstract

As the first full-length book dedicated to the philosophical legacy of Hans Jonas, The Integrity of Thinking is largely dedicated to summarizing and integrating the diverse phases in Jonas’ lifework. But the book has another, more ambitious goal. David Levy attempts to demonstrate that Hans Jonas is, for matters of public policy, nothing less than the most important philosopher of the twentieth century. This alleged importance stems from his unique philosophical achievements and their manifold practical applications. According to Levy, Jonas’ massive future importance will not be constrained to philosophy. Levy makes a series of admittedly “bold claims” regarding Jonas’ significance, culminating in the claim that he is “perhaps the pre-eminent practical thinker of our time”. This is excessive praise for a thinker who is still a relatively minor figure in twentieth-century philosophy, and who is still somewhat unknown by non-specialists outside his native Germany. Yet Levy hopes that the heightened public awareness of tensions between technology and ethics will create an audience for the thinker who has most successfully probed the origins of those tensions. Levy wishes to disseminate Jonas’ practical importance to a wider audience. But does Jonas merit these excessive claims, and therefore a wider audience?