A smile is the shortest distance between two people 　　Mark Twain once said, The human race has one really effective weapon, and that is laughter.A smile will unconsciously pull short distance between hearts, which is the charm of a smile. So never stop smiling, even when you are sad, for someone might fall in love with your smile. 　　Undoubtedly, it is smile that keeps us continually shortening the distance among people. When you fall down, a smile from others will bring you the power to stand up. Besides, smile is a name card which will make the people around you feel comfortable and pave the way for you to make good friends. When you feel disappointed with the life and get heartbroken with the love, just smile, its a good medicine for your hurt soul. Were there no smile, never would we taste a happy and healthy life. 　　Consequently, from what has been discussed above, it can be safely concluded that a smile is beneficial for us bridge gaps of social interaction and sweep disorders of human communication.