If there is any law governing the distribution of income between classes, it still remains to be discovered.

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

But, as soon as speculators become an important influence in the market, their business is to speculate on each others behaviour.

economics limps along with one foot in untested hypotheses and the other in untestable slogans.

science progresses by trial and error, and when it is forbidden to admit error there can be no progress.

It is impossible to add the stock of money to the flow of saving.

Utility is a metaphysical concept of impregnable circularity; utility is the quality in commodities that makes individuals want to buy them, and the fact that individuals want to buy commodities shows that they have utility.