"We must look at what immigration to America involves. To the new arrivals, the change is excruciating. Learning a new language and dealing with strange customs make the first years of life in the new land painful... The economic system of the United States is a mighty engine of persuasion. It motivates people to do what otherwise they never would in return for fulfilling their dreams. In the process, people learn that there is no sharp line between physical well-being and the higher purposes of life. The comfort of owning a house is at once meeting the obligation to care for one"