When you have finished analyzing all the variations and gone along all the branches of the tree of analysis you must first of all write the move down on your score sheet, before you play it.

It has always been recognized that chess is an art, and its best practitioners have been described as artists.

There is no doubt that the reason for my awful oversight was over-confidence that sapped my sense of danger. So that is where to look for the cause of bad blunders - in the exulting feeling of self-congratulation.

You must not let your opponent know how you feel.

The rise of the Soviet school to the summit of world chess is a logical result of socialist cultural development.

The study of typical plans is something that the leading grandmasters devote a great deal of time to. I would say that the most far-seeing of them devote as much time to this as to the study of openings.

It is better to follow out a plan consistently even if it isn't the best one than to play without a plan at all. The worst thing is to wander about aimlessly.