Just found it in an old article...
http://sportsillustrated.cnn.com/football/features/superbowl/archives/27/
In one remarkable session with the media, on Jan. 27, Johnson stood on the rostrum and opened a slight window into the way he looks at his life by talking about a book that had influenced him, Flow: The Psychology of Optimal Experience. Then, as if he were reluctant to end the give-and-take, he sat at a table and kept talking with a handful of reporters, for 20, 30, 45 minutes, until the room started to empty. The reporters wanted to know how Johnson had come into the NFL without any experience in pro football and put together, with such clarity, exactly the type of team he wanted.
"I like the guy who can walk into a poolroom and pick up a cue stick and sink the 8 ball," said Johnson. "The people I want around me, well, the bigger the game, the more they shine. Some people, I don't care if it's a six-inch putt, when everything's on the line, it's very tough for them. It's the way their lives have been. I can't do a whole lot about it, just eliminate 'em from our program."