Americo Castro and the Meaning of Spanish Civilization offers a systematic exploration of Castro's ideas, organized to trace the evolution and impact of his theories on Spanish history and culture. More than a typical Festschrift or homage, the book brings together contributions from scholars, friends, and former students who engaged closely with Castro's work. Their essays are intended to provide English-speaking audiences with insights into Castro's unique interpretations of Iberian civilization, emphasizing the distinctiveness of Spanish culture's contributions to Western history. The book includes Castro's seminal lecture, The Meaning of Spanish Civilization, a pivotal work that laid the groundwork for many of his later theories. The collection begins with Castro's 1940 Princeton lecture, followed by Guillermo Araya Goubet's essay The Evolution of Castro's Theories, which charts the development of Castro's thoughts and ideas, highlighting their innovative aspects. Stephen Gilman's Literature and Historical Insight rounds out the volume with an examination of Castro's critical work on El Libro de Buen Amor, bringing Castro's historical and literary analysis into a broader context. These essays, along with additional pieces from other contributors, aim to offer a cohesive view of Castro's enduring legacy and scholarly influence on both historical and cultural studies. Gratitude is extended to many individuals and institutions for supporting this publication, including Castro's family, who provided permissions and materials, and the Del Amo Foundation, which helped make the project possible. The combined efforts of translators, editors, and Castro's close colleagues ensured that his complex ideas could be conveyed effectively to a new audience. The book serves both as a tribute to Castro and as an accessible introduction to his profound insights into the Spanish-speaking world's unique cultural identity. This title is part of UC Press's Voices Revived program, which commemorates University of California Press's mission to seek out and cultivate the brightest minds and give them voice, reach, and impact. Drawing on a backlist dating to 1893, Voices Revived makes high-quality, peer-reviewed scholarship accessible once again using print-on-demand technology. This title was originally published in 1976.