"Whenever any thought or idea or moral imperative is transferred from one society to another an important question is whether that which is transferred is freely sought by the recipient or is, to one degree or another, forced down his throat. Does the transference occur freely through reading or the reports of visitors to other lands, i.e., does it occur as a voluntary importation by one society of what another has developed or found, or does it occur through the coercion of the bayonet or propaganda?"