This was great...saw it previously while researching the greatest player of all time...Gary Kasparov.
...on a side bar, it is not unusual for "behind the scene writers" assisting the famous "book sellers" in compiling a great book...and the public never knows about it...only the publishers...not that I am saying he didn't write it himself...but you never know.
I don't know if this has been posted elsewhere, but Garry Kasparov is an excellent writer!
http://www.nybooks.com/articles/23592