From ABC News:
For Massachusetts Gov. Mitt Romney today responded head-on to critics who say he flip-flops on issues, telling a crowd at a New Hampshire town hall that “it’s not that every single issue I’ve looked at my entire life I’ve never changed my view on.” …
Then, without specifically mentioning Perry’s latest web video attack on Romney, which accuses him of switching his stance on Obama’s stimulus plan, Romney said, “The nice thing about writing a book is that you can read it and see what I stand for.”
“In the private sector, if you don’t change your view when the facts change, you’ll get fired for being stupid,” Romney added.