A moral do xadrez

Benjamin Franklin: ON THE MORALS OF CHESS(1779)
The game of Chess is not merely an idle amusement. Several very valuable qualities of the mind, useful in the course of human life, are to be acquired or strengthened by it, so as to become habits, ready on all occasions.
1. Foresight, which looks a little into futurity, and considers the consequences that may attend an action; for it is continually occuring to the player, 'If I move this piece, what will be the advantages or disadvantages of my new situation? What use can my adversary make of it to annoy me? What other moves can I make to support it, and to defend myself from his attacks?
2. Circumspection, which surveys the whole chessboard, or scene of action; the relations of the several pieces and situations, the dangers they are respectively exposed to, the several possibilities of their aiding each other, the probabilities that the adversary may make this or that move, and attack this or the other piece, and what different means can be used to avoid his stroke, or turn its consequences against him.
3. Caution, not to make our moves too hastily. This habit is best acquired, by observing strictly the laws of the game; such as, If you touch a piece, you must move it somewhere; if you set it down, you must let it stand. And it is therefore best that these rules should be observed, as the game becomes thereby more the image of human life, and particularly of war . . .
And lastly, we learn by Chess the habit of not being discouraged by present appearances in the state of our affairs, the habit of hoping for a favourable change, and that of persevering in the search of resources. The game is so full of events, there is such a variety of turns in it, the fortune of it is so subject to sudden vicissitudes, and one so frequently, after long contemplation, discovers the means of extricating one's self from a supposed insurmountable difficulty, that one is encouraged to continue the contest to the last, in hopes of