Although Erich Przywara (1889-1972) was one of the preeminent Catholic theologians of his time and a profound influence on such people as Hans Urs von Balthasar and Joseph Ratzinger, he has remained virtually unknown in North America. This volume includes Przywara's groundbreaking Analogia Entis , originally published in 1932, and his subsequent essays on the concept analogia entis -- the analogy between God and creation -- which has currency in philosophical and theological circles today.