Pejmanesque states that Garry Kasparov is the greatest human chess player ever to have lived.
I think I'm going to have to check out
Capablanca and
I'm still convinced that there is no "greatest chess player who has ever lived" but, if there were, I would say Bobby is the greatest. Of course, in other aspects of his life Bobby is a looney, but in chess he knows what he's doing.
NOTE: I've got better things to do than erase the childish, immature, psychotic, obscene comments from looney Roger Weidner and his gang of illiterate morons, so just put your opinions at the Johnhays.net Forum.