" The ambivalent nature of light points if anything to a continuous underlying substance, what traditional cosmology calls the ether, which also exhibits a discontinuous aspect by virtue of its being indistinct. The debate in this domain today, if one glances at the principles involved, is not very much different from that of the followers of hylomorphism and atomism in the Middle Ages and in Antiquity. "

― Seyyed Hossein Nasr , Man and Nature: The Spiritual Crisis in Modern Man