Mathematics and the Mind of God is the synopsis of a leture held at a symposium under this title at the Free University of Amsterdam in 1995. It takes a critical position with respect to the suggestion that there is a shortcut from the exact sciences to theology. It is true that mathematics is the pure form in which the exactness of these sciences can be expressed. The fundamental principle of it, however, the structurability of our world of experience, is not expressible in mathematical form. It belongs to the subject matter of metaphysics, in the sense of rational relation of principles. Mystical experience and theological reflection are even beyond the realm of metaphysics, because they claim to transcend natural human reason. Jumping directly from science to theology therefore gives rise to many misunderstandings which are detrimental to both.