“Develop your pieces as quickly as possible”
Try to get the most out of each move.
Bring fresh force into play rather than move a piece that is already in play.
This principle applies right through the game.
The player who completes his/her development first has the initiative, which is a real advantage.
The problem of where to place your pieces when you develop them is solved by this
advice or maxim: “centralize”.
Let every piece have some bearing on the center.