The theme of Heisenberg's exposition is that words and concepts familiar in daily life can lose their meaning in the world of relativity and quantum physics. This in turn has profound philosophical implications for the nature of reality and for our total world view.

    In it Gustave Thibon, the farmer to whom she had entrusted her notebooks before her untimely death, compiled in one remarkable volume a compendium of her writings that have become a source of spiritual guidance and wisdom for countless individuals. On the fiftieth anniversary of the first English edition - by Routledge & Kegan Paul in 1952 - this Routledge Classics edition offers English readers the complete text of this landmark work for the first time ever, by incorporating a specially commissioned translation of the controversial chapter on Israel. Also previously untranslated is Gustave Thibon's postscript of 1990, which reminds us how privileged we are to be able to read a work which offers each reader such 'light for the spirit and nourishment for the soul'. This is a book that no one with a serious interest in the spiritual life can afford to be without.

    Why do skeptical and relativistic arguments have such power in the contemporary intellectual world? Why do they have that power in the humanities but not in the sciences? Why has a significant portion of the political Left - the same Left that traditionally promoted reason, science, equality for all, and optimism - now switched to themes of anti-reason, anti-science, double standards, and cynicism? Explaining Postmodernism is intellectual history with a polemical twist, providing fresh insights into the debates underlying the furor over political correctness, multiculturalism, and the future of liberal democracy.