As a man who played baseball brilliantly despite near-constant pain from a succession of injuries, Mickey Mantle knew something about courage. In The Quality of Courage we find Mickey's opinion on some of his widely-recognized associates including Jackie Robinson, Roger Maris, Casey Stengel, Joe DiMaggio, and Ted Williams. Here also are Mantle's opinions on some lesser known but equally meritorious candidates: war hero and pitcher Lou Brissie and umpire Bill Grieve. And then there is his opinion of those with whom he probably felt the strongest bond: players such as Roy Campanella, Don Zimmer, and Jimmy Piersall whose principal asset of physical excellence was suddenly taken from them.   Much is made of the need for role models in our society, but it is perhaps as instructive to learn which qualities the role models themselves find worthy of respect and emulation. Mickey gives us his list in his characteristic straightforward style, leavened with humor and a wealth of good stories.