A smile does not cost anything and produces very much. It enriches to whom they it receive, without impoverish who they give it. It does not last any more than an instant, but its recollection sometimes is eternal. Nobody is too rich to do without it. Nobody is too poor not to deserve it. It gives happiness in the home and rest on the work. It is the symbol of the friendship. A smile gives rest to the tired one. It encourages the most depressed. It is not possible to buy, nor be big enough, nor steal, since it is a thing that does not have value, up to the moment in which it is given. And if at some time you stumble over someone who cannot give one more smile, generously, give him yours. Because nobody takes so many need of a smile as the one that cannot give it to the others...