It is a simple fact that we can sell things to a person more readily if we know that person. We can't personally know every person to whom we wish to sell goods. We must therefore consider if there are not certain ways of thinking and of acting which are common to all people, or to a large proportion of people. If we can discover the laws governing the action of people's minds we will know how to appeal to those men. This Classic text by Mr. William Walker Atkinson remains today, one of history's leading works on marketing and salesmanship.