There really has never been a candidate like this. For anyone to say that they know what he truly believes is sheer lunacy. Chait is right:
"The different iterations of his career differ so wildly, yet comport so perfectly with his political ambitions of the moment, that it is simply impossible to separate his panders from his actual beliefs, the means from the ends."
The following video drives home the point in a fashion that would be hilarious were the stakes not so damn high.