"Capital" Taken from the flap of the book: Capital is a critical analysis of capitalism as political economy, and how it is the precursor of the socialist mode of production. Karl Marx proposes that the motivating force of capitalism is in the exploitation of labour, whose unpaid work is the ultimate source of profit and surplus value. The employer can claim right to the profits (new output value), because he or she owns the productive capital assets (means of production), which are legally protected by the State through property rights. In producing capital (money) rather than commodities (goods and services), the workers continually reproduce the economic conditions by which they labour. Capital proposes an explanation of the "laws of motion" of the capitalist economic system, from its origins to its future, by describing the dynamics of the accumulation of capital, the growth of wage labour, the transformation of the workplace, the concentration of capital, commercial competition, the banking system, the decline of the profit rate, and land-rents.