Emperor of CultureAlfonso X of Castile (1252 1284) was a true philosopher king, a medieval monarch whose contributions to science, music, historiography, poetry, fiction, and art have had lasting influence. His grand vision was to bring Castile into the mainstream of high civilization and to create a united artistic and religious people. To that end, he established Castilian as a proper language (it is now the fourth most spoken in the world) and wrote one of the most