"Rafael Cordero: A Posthumous Sympathy" is a book by the famous Puerto Rican historian Salvador Brau, which tells about the life and activities of the outstanding educator Rafael Cordero. This book reveals the biography of Cordero, who devoted his activities to the education and upbringing of the younger generation. The author examines the significance and impact of Rafael Cordero's activities on society, his pedagogical views and teaching methods. The book is an important contribution to the study of the history of education and the development of educational practices. Rafael Cordero: A Posthumous Sympathy is a must-read for anyone interested in pedagogy and the history of education.