Quotation by Daniel Clement Dennett

In chess we find several quite crisp distinctions that can also be discerned rather more problematically in the larger game of life. There are, for instance, the "forced moves" in chess. Moves are occasionally forced by the rules of chess: in these instances one finds oneself so boxed in that one and only one legal move is available.... More interesting ... are the forced moves on those occasions when there is more than one legal move, but only one non-idiotic, non-"suicidal" move, which is said for that reason to be forced. It is forced not by the rules of chess, and not by the laws of physics, but by the dictates of reason. It is obviously the only rational thing to do, given one's interest in winning (or just not losing) the game.