calculus - How to prove that $log(x)1$?

It's very basic but I'm having trouble to find a way to prove this inequality

$\log(x)

when $x>1$

($\log(x)$ is the natural logarithm)

I can think about the two graphs but I can't find another way to prove it, and, besides that, I don't understand why should it not hold if $x<1$

Can anyone help me?

Thanks in advance.