"[[Physics|[P]hysicists]]... try to find a fundamental law of motion for matter from which all elementary particles and their properties can be derived mathematically. This fundamental equation... may refer either to waves of a known type... or to waves... which have nothing to do with any of the known waves or elementary particles. In the first case it would mean that all other elementary particles can be reduced in some way to a few sorts of "fundamental" elementary particles... In the second case all different elementary particles could be reduced to some universal substance... energy or matter, but none of the... particles could be preferred... as... more fundamental. The latter... corresponds to... Anaximander, and... this view is the correct one."