微笑是这个世界上最强大的武器 - Dale Carnegie

How to unlock the simplest most influential weapon that we have on our faces, we give ourselves a quick look in the mirror every single morning before leaving the house, just to make sure that we look good. But sometimes we still show up at the office get the kids from school, or return home to our spouses with a frown on our face.

Why do we pay more attention to what we wear on our bodies than what we wear on our faces. Smiling, as simple as the act is, is so incredibly powerful, and of course it can't be an insincere grin, we all know what that looks like and we can all recognize that a mile away.

But a real smile can turn someone's day around, it sends a message of goodwill, it says to someone who is under a lot of pressure from their boss, their customers, teachers, parents, children whatever it is, that all is not hopeless. 

People who smile more tend to manage, teach and sell more effectively, they live happier lives. There's far more information in a smile than a frown, and that's why encouragement is a much more effective teaching device than punishment, even when we're talking on the phone, a smile comes through in our voices.

Carnegie tells a story of a computer department manager who was desperately trying to recruit a PhD for his department, he finally found the perfect candidate, but the boy also had offers from much larger, more reputable, more well-known companies. 

When the boy told the manager that he was choosing his company, the manager asked why, the boy explained, I think it's because the managers of the other companies spoke on the phone in a cold businesslike manner, which made me feel like just another business transaction. Your voice sounded as if you were glad to hear from me, that you really wanted me to be a part of your organization. A simple smile can go a long way. 

戴尔·卡耐基（Dale Carnegie，1888年11月24日—1955年11月1日），美国著名人际关系学大师，美国现代成人教育之父，西方现代人际关系教育的奠基人，被誉为是20世纪最伟大的心灵导师和成功学大师。 其在1936年出版的著作《人性的弱点》，70年来始终被西方世界视为社交技巧的圣经之一。

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