If the defender is forced to give up the center, then every possible attack follows almost of itself.
Always put the rook behind the pawn.... Except when it is incorrect to do so.
He who fears an isolated Queen's Pawn should give up Chess.
Chess is a form of intellectual productiveness, therein lies its peculiar charm. Chess, like love, like music, has the power to make men happy.
Every move creates a weakness.
Chess is a terrible game. If you have no center, your opponent has a freer position. If you do have a center, then you really have something to worry about!