In the book "Ancestral Sin", John S. Romanides addresses the concept of original sin, which he understands as an inheritance of ancestral sin from previous generations. Romanides asserts that original sin (understood as innate guilt) is not an apostolic doctrine of the Church nor cohesive with the Eastern Orthodox faith, but rather an unfortunate innovation of later church fathers such as Augustine. In the realm of ascetics it is by choice, not birth, that one takes on the sins of the world.