You can't play chess if you're groggy from pills.

Just make the right estimation of your own strengths and weaknesses, and also that of your opponent.

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!

The priority must be the unification of the world titles to straighten things out. But we should not wait that long anymore to change the situation, because we are running out of time.

I 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.

Chess is my life, but my life is not chess.

I still love to play chess. So I do not even spend a minute on the possibility to step back.