Jon Sobrino, S.J., teaches philosophy at the Universidad Centroamericana Jose Simeon Canas in San Salvador. Born in Barcelona into a Basque family during the Spanish Civil War, he earned his Master's degree in engineering mechanics at St. Louis University (1965) and his doctorate in theology from the Hochschule Sankt Georgen, Frankfurt (1975). He has contributed to the journals 'Estudios Centroamericanos' (San Salvador) and 'Christus' (Mexico). He also worked closely with Archbishop Romero. Sobrino's other books include 'Christology at the Crossroads', 'Jesus in Latin America', and 'Spirituality of Liberation'.