“Constant effort and frequent mistakes are the stepping stones to genius.”
“Mistakes are merely steps up the ladder...”
“Know the mistake of your dcision before your first step.”
“When you realize you've made a mistake, take immediate steps to correct it.”
“A good player who loses at chess is genuinely convinced hat he has lost because of a mistake, and he looks for this mistake in the beginning of his game, but forgets that there were also mistakes at ever step in the course of the game, that none of his moves was perfect. The mistake he pays attention to is conspicuous only because his opponent took advantage of it.”