Yes - I mean math is substantial and I'm certainly not denying
   its beauty as well as its practicality. I'm speaking of its
   uncanny utility in physics in particular, for as beautiful and
   valid as mathematics is with regards to a description of
   physical systems, there are points where they disconnect and go
   their separate ways. That's not a bad thing: It just means that
   physics isn't math and math isn't physics, but they correlate
   beautifully with each other in many ways.