Yes, I have played a blitz game once. It was on a train, in 1929.

A knight ending is really a pawn ending.

I only think well when my mind is calm.

You have to accustom yourself to practical study at home, you have to devote time to studies, to the history of chess, the development of chess theory, of chess culture.

It is a well known fact that almost all the outstanding chess-players have been first-class analysts.

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.

Memorization of variations could be even worse than playing in a tournament without looking in the books at all.