Brady says he's motivated to prove to himself that he can still play

Tom Brady has silenced the critics as a former sixth-round pick and seven-time Super Bowl champion. But at this stage of his career, the Tampa Bay Buccaneers quarterback says he's motivated to keep playing by the chance to prove to himself that he can still perform at a high level.

"It's hard to walk away from something that you still feel like you can do and you want to do," Brady said on "The Late Late Show with James Corden."

"So, it's not about proving to others what you can do, it's more about proving it to yourself. And I still feel like, even though I'll be 44 this year ... I really worked to a point where I can still do it at this age."

The 43-year-old passer added that he doesn't think about whether he's the greatest of all time.

In addition to his seven titles, the former New England Patriot has been named Super Bowl MVP five times and league MVP three times. Brady also holds the record for most regular-season wins (230) and postseason victories (34).