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

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

The very nature of economics is rooted in nationalism. ... It [was] developed ... in the hope of throwing light upon questions of policy. But policy means nothing unless there is an authority to carry it out, and authorities are national.

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

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

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.

One of the main effects (I will not say purposes) of orthodox traditional economics was ... a plan for explaining to the privileged class that their position was morally right and was necessary for the welfare of society.