Arithmetic is where numbers run across your mind looking for the answer. Arithmetic is like numbers spinning in your head faster and faster until you blow up with the answer. KABOOM!! Then you sit back down and begin the next problem. Alexander Nathanson Mathematics is often referred to as a servant of science and number theory as a queen of mathematics, by which we are to understand that number theory should contribute to the development of science by continuously supplying challenging problems and illustrative examples of its own discipline in anticipation of later practical use in the real world.