Reality is never a golden age.

In all the talk in the Principles (as opposed to the formal analysis) it is not the saving of rentiers but the energy of entrepreneurs which governs accumulation.

A depression is a situation of self-fulfilling pessimism.

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

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

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

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