No matter how much theory progresses, how radically styles change, chess play is inconceivable without tactics.
Samuel ReshevskyThe 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.
Samuel ReshevskyChess sharpens the mind, stimulates concentration, improves the memory and promotes visualization.
Samuel Reshevsky