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2. Audi, Robert (ed.). 1999. The Cambridge dictionary of philosophy, 2nd ed. Cambridge/New York/Melbourne/Madrid: Cambridge University Press.
3. Barrett, Justin L. 2004. Why would anyone believe in god? Walnut Creek: AltaMira Press.
4. Boethius. 1999. The consolation of philosophy. London/New York: Penguin Books.
5. Burns, Charlene P.E. 2002. Divine becoming: Rethinking Jesus and incarnation. Minneapolis: Ausburg Fortress Press.