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.

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.

Reality is never a golden age.

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

Ideology is like breath: you never smell your own.

Capitalism with near-full employment was an impressive spectacle. But a growth in wealth is not at all the same thing as reducing poverty. A universal paean was raised in praise of growth. Growth was going to solve all problems. No need to bother about poverty. Growth will lift up the bottom and poverty will disappear without any need to pay attention to it. The economists, who should have known better, fell in with the same cry.

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