There is an unearthly, mystical element in Friedman's thought. The mere existence of a stock of money somehow promotes expenditure. But insofar as he offers an intelligible theory, it is made up of elements borrowed from Keynes.

Marxism is the opium of the Marxists.

The nature of technology depends very much upon what the public can be induced to put up with.

It is the rate of investment which governs the rate of saving, and not vice versa.

It is much easier to organize control over one industry serving many markets than over one market served by the products of several industries.

Rosa Luxemburg maintained that the capitalist system can keep up its rate of investment (and therefore its profits) only so long as it is expanding geographically.

Capital' is not what capital is called, it is what its name is called.