" The progress of the world is retarded only by those who do not fill the places they are holding; they belong to a former age and a lower stage or plane of life, and their tendency is toward degeneration.  No society could advance if every man was smaller than his place; social evolution is guided by the law of physical and mental evolution.  In the animal world, evolution is caused by excess of life.   When an organism has more life than can be expressed in the functions of its own plane, it develops the organs of a higher plane, and a new species is originated. "

― Wallace D. Wattles , The Science of Getting Rich