I'm working on a proof and I'm stuck at what seems to me a severe case of mathematician's block (which is sort of like writer's block). I need to prove that when you take a number greater than 1 and raise it to any power the result is going to be larger than the original number. In other words:

If $\displaystyle x \ge 1$ and $\displaystyle n$ is a natural number, then $\displaystyle x^n \ge x$.