We often hear the terms 'positional' and 'tactical' used as opposites. But this is as wrong as to consider a painting's composition unrelated to its subject. Just as there is no such thing as 'artistic' art, so there is no such thing as 'positional' chess.
Samuel ReshevskyTartakower 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.
Samuel ReshevskyIt often happens that a player is so fond of his advantageous position that he is reluctant to transpose to a winning endgame.
Samuel Reshevsky