Tartakower once wrote that after planting a Knight in the center you can go to sleep. This is not to be taken literally, of course, but it contains more than a germ of truth.

Good players develop a tactical instinct, a sense of what is possible or likely and what is not worth calculating.

Chess sharpens the mind, stimulates concentration, improves the memory and promotes visualization.

It often happens that a player is so fond of his advantageous position that he is reluctant to transpose to a winning endgame.

No matter how much theory progresses, how radically styles change, chess play is inconceivable without tactics.

The knight is renowned for, among other things, its suitability as a blockader ... Because its strength lies in short-range operations it is not uncomfortable standing in a single spot for long periods, as the Bishop is.

Young players calculate everything, a requirement of their relative inexperience.