When the capital development of a country becomes a by-product of the activities of a casino, the job is likely to be ill-done

It has been pointed out already that no knowledge of probabilities, less in degree than certainty, helps us to know what conclusions are true, and that there is no direct relation between the truth of a proposition and its probability. Probability begins and ends with probability.

It's not bringing in the new ideas that's so hard; it's getting rid of the old ones.

The ideas of economists and political philosophers, both when they are right and when they are wrong, are more powerful than is generally understood. Indeed, the world is ruled by little else.

Unlike physics, for example, such parts of the bare bones of economic theory as are expressible in mathematical form are extremely easy compared with the economic interpretation of the complex and incompletely known facts of experience, and lead one a very little way towards establishing useful results.

The Class war will find me on the side of the educated bourgeoisie.

It is ideas, not vested interests, which are dangerous for good or evil.