Statement from MSNBC anchor Keith Olbermann:

Tony Snow was an optimistic, funny, and courageous man who could set aside his politics and inspire others to do the same. It might surprise many at all political points, but while we could not have disagreed more on policy, we were in frequent contact, even during his days as Press Secretary, even as I was criticizing his work and he was — in his own words — yelling at the screen as he watched. It was with great sadness that I heard of his death today, and with sincerity I extend my condolences and my staff's to his family. In the best of us, there is a difference between the message and the messenger, and Tony Snow epitomized that.