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 BotvinnikThe boy (then a 12 year old boy named Anatoly Karpov)doesn't have a clue about Chess, and there's no future at all for him in this profession
Mikhail BotvinnikWhen my opponent's clock is going I discuss general considerations in an internal dialogue with myself. When my own clock is going I analyse conctrete variations.
Mikhail Botvinnik