"We will not walk in fear, one of another. We will not be driven into an age of unreason if we dig deep into our history and remember we are not descended from fearful men."
For those who don't know Murrow was a great reporter and commentator. Keith Olbermann uses his closing remark "Good night, and good luck" as an homage to him, not to claim he is the modern Murrow. That full speech can be seen here as an excerpt from the movie about him, it was his retirement speech.