Salvador de Madariaga was the most remarkable of twentieth-century Spaniards. Oxford Professor, ambassador, minister, and author of sixty books, to supporters of General Franco he was public enemy number 1. This centenary commemoration lecture concentrates on his political career and finds the key to his activities in a Quixotic and impulsive idealism. This lay behind his doomed efforts to find international solutions to crises like the Italo-Ethiopian War and the Spanish Civil War and also the crusades against the Franco dictatorship which dominated the last thirty-five years of his life. The book should be of interest to students of 20th-century Spanish culture and history.