“How can we tell whether the rules which we "guess" at are really right if we cannot analyze the game very well? There are, roughly speaking, three ways.First, there may be situations where nature has arranged, or we arrange nature, to be simple and to have so few parts that we can predict exactly what will happen, and thus we can check how our rules work. (In one corner of the board there may be only a few chess pieces at work, and that we can figure out exactly.)A second good way to check rules is in terms of less specific rules derived from them. For example, the rule on the move of a bishop on a chessboard is that it moves only on the diagonal. One can deduce, no matter how many moves may be made, that a certain bishop will always be on a red square. So, without being able to follow the details, we can always check our idea about the bishop's motion by finding out whether it is always on a red square. Of course it will be, for a long time, until all of a sudden we find that it is on a black square (what happened of course, is that in the meantime it was captured, another pawn crossed for queening, and it turned into a bishop on a black square). That is the way it is in physics. For a long time we will have a rule that works excellently in an over-all way, even when we cannot follow the details, and then some time we may discover a new rule. From the point of view of basic physics, the most interesting phenomena are of course in the new places, the places where the rules do not work—not the places where they do work! That is the way in which we discover new rules.The third way to tell whether our ideas are right is relatively crude but prob-ably the most powerful of them all. That is, by rough approximation. While we may not be able to tell why Alekhine moves this particular piece, perhaps we can roughly understand that he is gathering his pieces around the king to protect it, more or less, since that is the sensible thing to do in the circumstances. In the same way, we can often understand nature, more or less, without being able to see what every little piece is doing, in terms of our understanding of the game.”

“It is not by regretting what is irreparable that true work is to be done, but by making the best of what we are. It is not by complaining that we have not the right tools, but by using well the tools we have. What we are, and where we are is God's providential arrangement - God's doing, though it may be man's misdoing; and the manly and the wise way is to look your disadvantages in the face, and see what can be made our of them.”

“Power is not something to be destroyed: that remains beyond our means. What we can do, however, is understand its mechanism and do everything possible to disrupt it. Whether we do this by overriding power instead of censuring it, by working towards the generalized confusion of powers, by driving the rules of the game over the edge, we must always remember that these activities will continue to be exercises of power, nocturnal perhaps, but not the desired emergence of weakness between all men.”

“Every war and conflict that the United States enters has its own ROE [rules of engagement]. Contrary to what most people think, the U.S. military does not have a complete license to kill, even in wartime. We are not a barbaric state, and we do not enter any war with the intention of unilaterally killing anything in our path. We go out of our way to spare civilian lives, to keep those who are not in the war out of it--sometimes even at the expense of risking our own soldiers' safety. We do this by creating strict rules to which our soldies adhere. These rules govern when they can fire, when they cannot; what type of force they can use, what type they cannot; what they can do in particular situations, and what they cannot. The reason for this is that battles can become very confusing very quickly, and a common soldier needs simple rules to guide him, to know when he is or is not allowed to kill--and who is and is not the enemy.”

“I think that we may safely trust a good deal more than we do. We may waive just so much care of ourselves as we honestly bestow elsewhere. Nature is well adapted to our weakness as our strength. The incessant anxiety and strain of some is a well nigh incurable form of disease. We are made to exaggerate the importance of what work we do; and yet how much is not done by us! or, what if we had been taken sick? How vigilant we are! determined not to live by faith if we can avoid it; all the day long on the alert, at night we unwillingly say our prayers and commit ourselves to uncertainties. So thoroughly and sincerely are we compelled to live, reverencing our life, and denying the possibility of change. This is the only way, we say; but there are as many ways as there can be drawn radii from one centre. All change is a miracle to contemplate; but it is a miracle which is taking place every instant. Confucius said, “To know that we know what we know, and that we do not know what we do not know, that is true knowledge.” When one man has reduced a fact of the imagination to be a fact to his understanding, I foresee that all men will at length establish their lives on that basis.”

“There comes a time when every one of our people understands that a Jew can never be attached to a place. The rules always change, and we always lose. People will always despise us, and we must be ready to fly away. We cannot have roots in the earth of any country, only in the garden that we carry inside us.”