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.