LH--I am not sure what the Church thought of Baruch Spinoza, a rabinical student, he was banned from the synagogue for his ideas--also he was one of the early advocates of free thought and free speech--

Amos, I am not sure if your definition, as per the one divine entity, is a good one, since it would mean that atheism would be consistant with dualism--this seems like a trifling bit of nitpickiness, except that it can be argued that Thomism, which is a fundamental element in modern Catholicism(and like it or not, you Lutherans, modern Christianity) , hinges on the dualistic notion of matter and form--I'll give the atheists Spinoza and Pantheism, materialism, and a chunk of Socratic thought, but if we hand over Aristotle and St. Thomas Aquinas, then, for all intents and purposes, Christianity is Atheism!!!!