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.

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.

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.

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

A depression is a situation of self-fulfilling pessimism.

There is no such thing as a normal period of history. Normality is a fiction of economic textbooks.

Unequal distribution of income is an excessively uneconomic method of getting the necessary saving done.