The essential teaching of liberalism is that social coöperation and the division of labor can be achieved only in a system of private ownership of the means of production, i.e., within a market society, or capitalism. All the other principles of liberalism – democracy, personal freedom of the individual, freedom of speech and of the press, religious tolerance, peace among the nations – are consequences of this basic postulate. They can be realized only within a society based on private property.