owning capital is not a productive activity.

we make a great fuss about national conscience, but it consists mainly in insisting upon everyone ascribing our national policy to highly moral motives, rather than in examining what our motives really are.

The only thing worse than being exploited by capitalism is not being exploited by capitalism.

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

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.

I do not regard the Keynesian revolution as a great intellectual triumph. On the contrary, it was a tragedy because it came so late. Hitler had already found out how to cure unemployment before Keynes had finished explaining why it occured.

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.