 Pantheists holds that whatever exists falls within God. This places them in disagreement with any theory of the supernatural. But such opposition must not be misunderstood, for to say that there is no supernatural realm is not in itself to delineate the range of what is natural. This is important, for while many contemporary pantheists have been epistemologically conservative, there is no reason in principle why the pantheist should oppose the idea of that which is epistemically transcendent to us, no reason (that is) why he should seek to limit the compass of the universe to the known universe. For example, Spinoza held, not only that the realms of thought and extension must stretch indefinitely beyond our finite grasp, but that, as well as in the two known realms of thought and extension, the one substance must exist also in an infinity of other dimensions completely beyond our power to conceive.