Historically, land taxes are commutations of physical rents into money-rents, and taxes are not something taken from private property by the sovereig… - John R. Commons

In the entire circuit of the globe those races which have developed under a tropical sun are found to be indolent and fickle. From the standpoint of survival of the fittest, such vices are virtues, for severe and continuous exertion under tropical conditions bring prostration and predisposition to disease. Therefore, if such races are to adopt that industrious life which is a second nature to races of the temperate zones, it is only through some form of compulsion. The negro could not possibly have found a place in American industry had he come as a free man.

Legally, the term liberty means absence of duty, or rather the limit of duty.

Economic theory, since the time of the Physiocrats, has endeavored to get rid of the human will and to explain economic phenomena in terms of physical and hedonic forces. The human will had been the main reliance of the Mercantilists and of the economic theory of the Church fathers. But the will was arbitrary, capricious and contrary to natural laws. There were two stages of these physical theories which attempted to get away from the will:-the natural rights arld physical equilibrium stage of foreordained evolution of Quesnay, Adam Smith and Karl Marx, and the natural selection stage of blind evolution that followed Darwin, whose distinguished exponent in economics is Veblen. The theorists of each stage attempted to get rid of the human will and to explain economic phenomena as the working out of natural forces, either foreordained or blind. It was a concept of society as the natural growth of a mechanistic equilibrium.