Just make the right estimation of your own strengths and weaknesses, and also that of your opponent.
Anatoly KarpovI still remember Botvinnik's reaction to each of my games, right from the opening moves. At first he would express amazement, then annoyance, and, finally irritation.
Anatoly KarpovFurman astounded me with his chess depth, a depth which he revealed easily and naturally, as if all he were doing was establishing well-known truths.
Anatoly KarpovIf the opponent offers keen play I don't object; but in such cases I get less satisfaction, even if I win, than from a game conducted according to all the rules of strategy with its ruthless logic.
Anatoly Karpov