Rousas John Rushdoony, Systematic Theology, Volume I, Vallecito, California: Ross House Books, 1994, p.171
"Basic to Christian faith is the doctrine of the triune God of Scripture. When Christians speak of God, they mean the God who reveals Himself in the Bible. Any other god is a product of man’s imagination. It is very convenient for man to posit a god, and man has very often done so. Man’s purposes in doing so are many, but in every case they are self-serving. Philosophy, for example, has often posited a god in order to provide itself with firm ground at some point or another. As a result, a god has, as in Greek philosophy, provided the first cause in order to escape from the intellectual problem of infinite regress. Such a god has little function other than to provide a necessary link in a chain of reasoning. In Descartes, the idea of god provides an insurance policy for Descartes’ epistemology; apart from that, Descartes’ god has little function, and it is the autonomous mind of man which governs and prevails."