Every great master will find it useful to have his own theory on the openings, which only he himself knows, a theory which is closely linked with plans for the middle game.
Mikhail BotvinnikIn short, we can see Karpov as an exploiter of other peopleโs ideas. His ability to use these ideas is not at issue, but he himself is about as fertile as a woman who has been sterilized is.
Mikhail BotvinnikChess is no whit inferior to the violin, and we have a large number of professional violinists
Mikhail Botvinnik