from abc news:
"There's an aspect of politics that is about me, right? And then there's an aspect of politics that is larger than me. And there you have to have a certain amount of megalomania to think that you should be president of the United States. But I think you have to cross a certain threshold when you say, 'This is not about my ambition. It's about something bigger,'" Obama said.
GMA part 2
