Money is a new form of slavery, and distinguishable from the old simply by the fact that it is impersonal - that there is no human relation between master and slave.
Leo TolstoyThe most difficult subjects can be explained to the most slow- witted man if he has not formed any idea of them already; but the simplest thing cannot be made clear to the most intelligent man if he is firmly persuaded that he knows already, without a shadow of doubt, what is laid before him.
Leo Tolstoy