Weigh matters carefully, and think hardest about those that matter most

Fools are lost by not thinking. They never conceive even the half of things, and because they do not perceive either their advantages or their harm they do not apply any diligence. Some ponder things backward, paying much attention to what matters little, and little to what matters much. Many people never lose their heads because they have none to lose. There are things we should consider very carefully and keep well rooted in our minds. The wise weigh everything : they delve into things that are especially deep or doubtful, and sometimes reflect that there is more than what occurs to them. They make reflection reach further than apprehension.