In sum, so far as the politicians are concerned, the lesson that this book tried to instill more than thirty years ago does not seem to have been lea… - Henry Hazlitt

Economics is haunted by more fallacies than any other study known to man. This is no accident. The inherent difficulties of the subject would be great enough in any case, but they are multiplied a thousandfold by a factor that is insignificant in, say, physics, mathematics or medicine - the special pleading of selfish interests. While every group has certain economic interests identical with those of all groups, every group has also, as we shall see, interests antagonistic to those of all other groups. While certain public policies would in the long run benefit everybody, other policies would benefit one group only at the expense of all other groups. The group that would benefit by such policies, having such a direct interest in them, will argue for them plausibly and persistently. It will hire the best buyable minds to devote their whole time to presenting its case. And it will finally either convince the general public that its case is sound, or so befuddle it that clear thinking on the subject becomes next to impossible.

In addition to these endless pleadings of self-interest, there is a second main factor that spawns new economic fallacies every day. This is the persistent tendency of man to see only the immediate effects of a given policy, or its effects only on a special group, and to neglect to inquire what the long-run effects of that policy will be not only on that special group but on all groups. It is the fallacy of overlooking secondary consequences.

To try to cure unemployment by inflation rather than by adjustment of specific wage-rates is like trying to adjust the piano to the stool rather than the stool to the piano.

There will not be a “surplus” of capital until the most backward country is as well equipped technologically as the most advanced, until the most inefficient factory in America is brought abreast of the factory with the latest and finest equipment, and until the most modern tools of production have reached a point where human ingenuity is at a dead end, and can improve them no further. As long as any of these conditions remains unfulfilled, there will be indefinite room for more capital.