"If I had been present at the Creation," the thirteenth-century Spanish philosopher-king Alfonso X is said to have stated, "Many faults in the universe would have been avoided." Known as El Sabio, "the Wise," Alfonso was renowned by friends and enemies alike for his sparkling intellect and extraordinary cultural achievements. In The Wise King, celebrated historian Simon R. Doubleday traces the story of the king's life and times, leading us deep into his emotional world and showing how his intense admiration for Spain's rich Islamic culture paved the way for the European...