Is sanity power?

I think that sanity dont means power. because power brings insanity to a "normal" person.
The person who has many many power do what he or she want, most of the time the power blind to the people, they only found benefits for them, without import the rest of the people.
Rarely there are people that use positively the power, to made good things that benefits them, and the rest.
But most of the time people abuse of power. For example the presidents that had in dictatorships in south america, they killed many people, for being contrary to their ideas.
Hitler was another that had many power and killed millon people.
the power corrupt people, and made insane.