"Socialism is not a discrete philosophy of fixed doctrine and program; its branches advocate a degree of social interventionism and economic rationalization, sometimes opposing each other. Another dividing feature of the socialist movement is the split on how a socialist economy should be established between the reformists and the revolutionaries. Some socialists advocate complete nationalization of the means of production, distribution, and exchange; while others advocate state control of capital within the framework of a market economy. Social democrats propose selective nationalization of key national industries in mixed economies combined with tax-funded welfare programs; Libertarian socialism (which includes Socialist Anarchism and Libertarian Marxism) rejects state control and ownership of the economy altogether and advocates direct collective ownership of the means of production via co-operative workers' councils and workplace democracy.

"The necessaries of life occasion the great expense of the poor. They find it difficult to get food, and the greater part of their little revenue is spent in getting it. The luxuries and vanities of life occasion the principal expense of the rich, and a magnificent house embellishes and sets off to the best advantage all the other luxuries and vanities which they possess. A tax upon house-rents, therefore, would in general fall heaviest upon the rich; and in this sort of inequality there would not, perhaps, be anything very unreasonable. It is not very unreasonable that the rich should contribute to the public expense, not only in proportion to their revenue, but something more than in that proportion.