"In order to get to end game in good shape, you have to have an overall plan and, when I say overall, I mean board-wide. In every action you take, be it military or diplomatic, you MUST consider how it will affect every country on the board, not only now, but later. Don't forget that, in building up one country, be it yours or your ally's, it will have effects all the way across the board."
January 1, 1970
https://en.wikiquote.org/wiki/Diplomacy_(game)