All religions are, in the end, based upon certain physical assumptions,
which are already in existence and adapt the religions to their needs .
for example, in Christianity, the contrast between body and soul, the
unlimited importance of the earth as the "world," the marvellous
occurrences in nature. If once the opposite views gain the mastery--for
instance, a strict law of nature, the helplessness and superfluousness
of all gods, the strict conception of the soul as a bodily process--all
is over. But all Greek culture is based upon such views.
- -- Friedrich Nietzsche