Capablanca's phenomenal move-searching algorithm in those early years, when he possessed a wonderful ability for calculating variations very rapidly, made him invincible.
Mikhail BotvinnikChess is a part of culture and if a culture is declining then Chess too will decline
Mikhail BotvinnikIt must be clearly understood that Soviet players do not seek simple systems in the opening, but try to formulate opening systems in which everything is complicated, distinctive, or new.
Mikhail BotvinnikI ... have two vocations: chess and engineering. If I played chess only, I believe that my success would not have been significantly greater. I can play chess well only when I have fully convalesced from chess and when the 'hunger for chess' once more awakens within me.
Mikhail Botvinnik