Smile is very precious in the world. Keeping smile is a polite behavior everywhere. No matter where you go, whom you meet, smile is the best way to show yourself. Even you can’t communicate by language; smile will make others think you are no harm. Secondly, smile makes a person look more beautiful. People often say that you look very beautiful when you are smiling. Smile a lot can make a person become happier. In general, smile is very important. Do not forget to smile no matter what happen. Your life will be different with smile.