“The social function of economic science consists precisely in developing soundeconomic theories and in exploding the fallacies of vicious reasoning. In the pursuit ofthis task the economist incurs the deadly enmity of all mountebanks and charlatanswhose shortcuts to an earthly paradise he debunks. The less these quacks are able toadvance plausible objections to an economist’s argument, the more furiously do theyinsult them.”

“The general valorization of reason and evidence, scrutiny of social arrangements, open discourse and a reasonable scepticism have all been very healthy developments. The attempts to push them back —from both the right and the left wing and for different reasons, but denigrating secular reason, science, objectivity, free speech—I think bring dangers.”

“It is often sadly remarked that the bad economists present their errors to the public better than the good economists present their truths. It is often complained that demagogues can be more plausible in putting forward economic nonsense from the platform than the honest men who try to show what is wrong with it. But the basic reason for this ought not to be mysterious. The reason is that the demagogues and bad economists are presenting half-truths. They are speaking only of the immediate effect of a proposed policy or its effect upon a single group. As far as they go they may often be right. In these cases the answer consists in showing that the proposed policy would also have longer and less desirable effects, or that it could benefit one group only at the expense of all other groups. The answer consists in supplementing and correcting the half-truth with the other half. But to consider all the chief effects of a proposed course on everybody often requires a long, complicated, and dull chain of reasoning. Most of the audience finds this chain of reasoning difficult to follow and soon becomes bored and inattentive. The bad economists rationalize this intellectual debility and laziness by assuring the audience that it need not even attempt to follow the reasoning or judge it on its merits because it is only "classicism" or "laissez faire" or "capitalist apologetics" or whatever other term of abuse may happen to strike them as effective.”

“The peculiarity of the evidence of mathematical truths is, that all the argument is on one side. There are no objections, and no answers to objections. But on every subject on which difference of opinion is possible, the truth depends on a balance to be struck between two sets of confliting reasons. Even in natural philosophy, there is always some other explanation possible of the same facts; some geocentric theory instead of heliocentric, some phlogiston instead of oxygen; and it has to be shown why that other theory cannot be the true on: and until this is shown, and until we know how it is shown, we do not understand the grounds of our opinion. But when we turn to subjects infinitely more complicated, to morals, religion, politics, social relations, and the business of life, three-fourths of the arguments for every disputed opinion consist in dispelling the appearances which favour some opinion different from it.”

“The development of science and of the creative activities of the spirit requires a freedom that consists in the independence of thought from the restrictions of authoritarian and social prejudice.”

“Objects exist and if one pays more attention to them than to people, it is precisely because they exist more than the people. Dead objects are still alive. Living people are often already dead.”