Calvin shares Luther’s basic understanding of the disjunction between philosophy and theology. Like Luther, Calvin holds that the Fall has corrupted the power of human reason, but has not destroyed it altogether (Institutes 2.2.12–17). When restricted to its proper sphere—matters pertaining to the natural world—philosophy remains valuable. But as a result of the Fall, “heavenly things” are inaccessible to unaided human reason (Institutes 2.2.13). By “heavenly things”, Calvin means the saving truths of the Gospel.