Maritain, Jacques (July 1949). “On the Meaning of Contemporary Atheism”. The Review of Politics11 (3): 267–280. doi:10.1017/S0034670500044168. http://www.nd.edu/Departments/Maritain/jm3303.htm. "By positive atheism I mean an active struggle against everything that reminds us of God – that is to say, anti-theism rather than atheism – and at the same time a desperate, I would say heroic, effort to recast and reconstruct the whole human universe of thought and the whole human scale of values according to that state of war against God."
Maritain, Jacques (July 1949). “On the Meaning of Contemporary Atheism”. The Review of Politics11 (3): 267–280. doi:10.1017/S0034670500044168. http://www.nd.edu/Departments/Maritain/jm3303.htm. "By positive atheism I mean an active struggle against everything that reminds us of God – that is to say, anti-theism rather than atheism – and at the same time a desperate, I would say heroic, effort to recast and reconstruct the whole human universe of thought and the whole human scale of values according to that state of war against God."
positiveatheism.org
Flew, Antony (1976). “The Presumption of Atheism”. The Presumption of Atheism, and other Philosophical Essays on God, Freedom, and Immortality. New York: Barnes and Noble. pp. 14ff. http://www.positiveatheism.org/writ/flew01.htm2011年12月10日閲覧. "In this interpretation an atheist becomes: not someone who positively asserts the non-existence of God; but someone who is simply not a theist. Let us, for future ready reference, introduce the labels 'positive atheist' for the former and 'negative atheist' for the latter."