"The most important quality in a politician is sincerity: if you can fake that, you've got it made."
There's probably a great deal of truth in that, but it's nearly impossible to do. There's always something in the eyes that reveals the lie.
Slick Willie was one of the best, but even he couldn't really convince us that he was sincere, or truthful. It's why we called him "Slick".
Obama isn't even in Slick's league. Not even close. Even with millions of people worshiping him like a god, he still came off phony and plastic.