This booklet revives a little known document written in February 1915 by the neuroanatomist and Nobel laureate Santiago Ram n y Cajal (1852-1934), concerning the political, sentimental, and ideological trends that would dominate the European scene in the aftermath of World War I. With his remarkable acumen, Cajal predicted the outburst of World War II and the consequent formation of international alliances. The only values of worth in the human species,...