A quarter century after his presidency, Jimmy Carter stays his course. The Real Jimmy Carter How Our Worst Ex-President Undermines American Foreign Policy, Coddles Dictators, and Created the Party of Clinton and Kerry by Steven F. Hayward Regnery, 272 pp., $27.95 DURING THE FUNERAL CEREMONIES for President Reagan, few people mentioned the fortieth president without paying tribute to the job he did in dispelling the national mood that he met at the start of his mission: the enervation and horror, the malaise and bad feeling, the gloom and despair. The person most representative of this mood was carefully not mentioned:...