Harvard classics professor Krebs writes a scholarly but lucid account of the abuse of history. Written in 98 C.E. by the Roman official Tacitus, About the Origin and Mores of the Germanic Peoples was lost for centuries but resurfaced around 1500 as Germans were growing resentful of foreign domination—in this case from the Catholic Church in Rome. The rediscovered book launched a primitivist myth that captivated admirers over the next 500 years, from Martin Luther to Heinrich Himmler, who loved its portrayal of ancient Germans as freedom-loving warriors, uncultured but honorable, in contrast to decadent Romans. In fact, Tacitus probably never visited Germany, Krebs notes. Rather, using books and travelers' reports, he wrote for a Roman audience who shared his romantic view of northern barbarians. Enthusiastic German readers, culminating in the Nazis, ignored Tacitus's disparaging comments, misread passages to confirm their prejudices, and proclaimed that the ancient historian confirmed their national superiority. This is an inventive analysis of, and warning against, an irresistible human yearning to find written proof of one's ideology. Illus. (May)