人需要精明，精明强干，才有大的作为。如果精明过了度，总想算计别人，损人利己，为了蝇头小利，不惜丢掉人格和良心，那也难成大器，只会落得个害人始而损己终的下场。“三国”的周瑜，是很精明的，３０来岁统帅三军，没有能耐能行吗？但他容不得诸葛亮，恃其精明，几次算计 People need smart, smart and strong, have a big act. If you are shrewd, always want to count other people, harm their own selfish interests, in order to petty profits, at the expense of personality and conscience, it is also difficult to become a culprit, will only end up with a victim of the end. “Three Kingdoms,” Zhou Yu, is very smart, 30-year-old commander of the armed forces, can not be able to do it? But he could not tolerate, depending on its shrewdness, several calculations