"He’s making a big promise. But his advisors have said, his own advisors have said, he may not stand by them. ... One of the differences between Donald Trump and me is I’m telling you what I will do, I’m laying out my plans, and I will stand by them, and I want you to hold me accountable for delivering results. This all reminds me of that old saying, ‘if it sounds too good to be true, it probably is.’"