A smile costs nothing and makes it much. It enriches those who receive, without impoverishing those who give. It takes a moment but his memory is sometimes forever. None can do without it. None is so poor that can not give it. It creates happiness at home and it is supported in business, it is sensible sign of the deep. A smile gives rest to fatigue, discouragement renewed braveness, sadness and consolation of all pain is natural remedy. But it is good that you can not buy, or provide, or steal, because it has value only in the instant in which he gives himself. And if you meet sometimes who does not give the expected smile, be generous and give your, because None needs so much a smile of someone who is unable to give it to others.