Ian and his brother Greg were both great leaders who led the teams from the front. They were not playing for the money but for the fun of the game. They retired when they were in their prime. In his last test appearance Ian (playing under Greg) made 75 and 26 not out. He could have continued for a lot of more tests but didn't. Same was true of Greg Chappell who actually made a century in his last test match. These people practiced what they preach now. But they don't understand that in India things don't work this way, because the greed of money is there. So the players keep on playing until they are kicked out. Some come back even after being kicked out...
