I'm posting here because I can't prove what I say, but I believe I can defend it on a case by case basis. I hope to attract math oriented members to challenge me. The mathematician Leopold Kronecker said "God made the integers; everything else is the work of man." http://en.wikipedia.org/wiki/Leopold_Kronecker Well, I'm not speculating on the source of the integers but I am proposing the following: 1. There is a group which is fundamental to all mathematics. Everything else is derivative. I'm excluding Set Theory and Logic, and considering geometry to be derivative because it can be expressed algebraically and algebra is derivative. 2. The objects of the group are the non-negative integers and the irrational numbers. 3. The operation over the group is addition with its inverse, subtraction. 4. The identity element is zero.