An amusing fact: as far as I can recall, when playing the Ruy Lopez I have not yet once in my life had to face the Marshall Attack!
Anatoly KarpovThe first great chess players, including the world champion, got by perfectly well without constant coaches.
Anatoly KarpovBut how difficult it can be to gain the desired full point against an opponent of inferior strength, when this is demanded by the tournament position!
Anatoly Karpov