41. Sanctions are usually subject to a law of diminishing returns and have probably achieved all they can in moderating Libyan conduct. 42. That he wrote too many books subjected him to the law of diminishing returns , and his very popularity certainly was a curse. 43. Education must provide a new source for growth, the kind of growth that is not subject to the law of diminishing returns . 44. Considered in this context, perhaps Kansas City's sales tax revenue weakness is a matter of the law of diminishing returns taking effect. 45. Or, as I prefer to break it down, the law of diminishing returns simply means having too much of a good thing. 46. In fact, the only sure thing these days for NFL coaches is the old economic principle : the law of diminishing returns . 47. Creative substitution is the loophole in the law, not just the law of diminishing returns , but the law of supply and demand itself. 48. In describing a situation at a pizza buffet-style restaurant, I explained how this was a textbook example of the law of diminishing returns . 49. The fortunes of the Drury sequence obeyed the law of diminishing returns , and toward the end he no longer inhabited the bestseller chart. 50. From what I'm told ( having not read any of the later Hornblower tales ), Forester rose above that well-known law of diminishing returns .