Reality is never a golden age.

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.

When I came up to Cambridge (in October 1921) to read economics, I did not have much idea of what it was about.

The point of studying economics is so as not to be fooled by economists.

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.

The first essential for economists ... is to ... combat, not foster, the ideology which pretends that values which can be measured in terms of money are the only ones that ought to count.

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