An American author of science fiction, fantasy, non-fiction, and biography, he’s particularly known for works like the Imperfect Enchanter and Lest Darkness Fall. He released several hundred literary functions during the period of his sixty-year profession. He went to the California Institute of Technology and worked well as an aeronautical engineer before you begin his literary profession. He was a founding person in the Swordsmen and Sorcerers’ Guild of America (SAGA). He and his two brothers was raised in NEW YORK. He wedded Catherine Crook in 1939. He was affected by the task of Isaac Asimov.