THE FUTURE OF MANKIND (342 pp.) Karl JaspersUniversity of Chicago ($5.95).
"Not famine, not pestilence, not war will bring back seriousness," Kierkegaard once said. "It is not till the eternal punishments of hell regain their reality that man will turn serious." German Philosopher Karl Jaspers feels that there is a fairly vivid equivalent of the horrors of hell in the threatened nuclear extinction of the human race. The Future of Mankind is a stern call to seriousness. It is also a call to reason, courage and responsibility. It is based on a premise that may sound bleak, but has probably been the...