Jim Brown: "Pardon me?"
Lawrence Taylor: "What did you say?"
Jim Thorpe: "Seriously?"
Walter Payton: "What?"
Deacon Jones: "Don't get me started about quarterbacks."
Paul Hornung: "Tell me about Brady's versatility, willya?"
Johnny Unitas: "He's not even the greatest quarterback."
Joe Montana: "What Johnny said."
Otto Graham: "What Joe said."
Bart Starr: "What Otto said."
Don Hutson: "...and Brady revolutionized the game how?"
Jerry Rice: "...and I was better than Hutson!"
Jerry Kramer: "Why am I not in the Hall of Fame again?"
Gayle Sayers: "If I had modern medicine and all that money to pay for dietitians and trainers...."
Dick Butkus: "Same with me."
Bo Jackson: "Me, too."
Red Grange: "Greatest? Did I hear that right?"
Brett Favre: "If I didn't have to play for Ray Rhodes and Mike Sherman...."
John Hannah: "Hell, Brady might even be the greatest Patriot."
Forrest Gregg: "Lombardi called me the greatest player he ever coached. I'll just leave that here."
Barry Sanders: "If I played for an organization that had a clue...."
The 12th Man: "What about Russel Wilson or Richard Sherman or Marshawn Lynch or--"
Everyone Else: "Shut up!"
(Gleaned from my personal Facebook page, 6 February 2017)