Think things over, especially those that are most important. All fools come to grief from lack of thought. They never see even the half of things and, as they do not observe their own loss or gain, still less do they apply any diligence to them. Some make much of what matters little and little of much, always weighing in the wrong scale. Many never lose their common sense, because they have none to lose. There are matters that should be observed with the closest attention, and thereafter always kept well in mind. The wise person thinks over everything, but with a difference, most profoundly where there is some profound difficulty, suspecting that perhaps there is more in it than he first thought. Thus his comprehension extends as far as his apprehension.