There are no limitations to the mind except those we acknowledge. Both poverty and riches are the offspring of thought.

Economics is not politics. One is a science, concerned with the immutable and constant laws of nature that determine the production and distribution of wealth; the other is the art of ruling.

Economics (...) is not a matter of discovering laws: it is essentially a question of design.

Intellect is not wisdom.

Economics is not the Emperor of the social sciences, but the Humpty Dumpty.

An economist is a mixture of 1) a businessman without common sense, 2) a physicist without brain, and 3) a speculator without balls.

We need to abandon the economist's notion of the economy as a machine, with its attendant concept of equilibrium. A more helpful way of thinking about the economy is to imagine it as a living organism.

Economics is not a science and should not be there to advise policy.

[E]conomics cannot be purged of ideology...

Let's not pretend that mental phenomena can be mapped on to the characteristics of billiard balls.

Economics is not a true description of one kind of action but an abstract, arbitrary, and therefore erroneous description of all action; and the ‘economic man’ whom it describes is not, in these days, denied to be a fictitious entity

The laws of logic do not prescribe the way our minds think; they prescribe the way our minds ought to think.

Economics is not an exact science.

That neither our Thoughts, nor Passions, nor Ideas formed by the Imagination, exist without the Mind, is what every Body will allow. And it seems no less evident that the various Sensations or Ideas imprinted on the Sense... cannot exist otherwise than in a Mind perceiving them... For as to what is said of the absolute Existence of unthinking Things without any relation to their being perceived, that seems perfectly unintelligible. Their Esse is Percipi, nor is it possible they should have any Existence, out of the Minds or thinking Things which perceive them.