GW Bush, the presidency of the USA and god

I have read this morning, in shock, the last statements from GW Bush in a "motivational seminar" (whatever it means), made recently. Among other pearls -any GW Bush speech is a neverending source of jewels-, he said this:

I don't see how you can be president without relying on the Almighty. Now when I was 21, I wouldn't have told you that, but at age 63, I can tell you that one of the most amazing surprises of the presidency was the fact that people's prayers affected me. I can't prove it to you. But I can tell you some days were great, some days not so great. But every day was joyous...

I have said this before, but everytime I see news on this guy, I can't avoid to remind it: the fact that GW Bush was once the president of the USA evidences that, literally, anybody can become president of the USA. Somebody should make changes in the political system of that country, to avoid it, because (in theory, at least) the main authority in any country is supposed to be someone with intelligence and talent enough to run the fate of that country. And I am not alone in thinking that this guy was far below the minimum standards to be the president of the most powerful country in the world.