“In our era, man has again become a subject under the watchful eye of government. Guided by ancient notions and prejudices he depends on his rulers for mandates and directives. When government intervention fails to satisfy him, or even works evil, he is slow to relinquish his notions and prejudices. He may cling to them with tenacity and perseverance, but may seek to avoid the ill effects through circumvention, evasion, and escape. He may find his way to the “black market,” where economic transactions take place in violation of price control and ration laws. Or he may descend to the “underground” where political edicts are ignored and exactions avoided through word-of-mouth dealings and cash transactions.” [read the entire book]