A useful definition of liberty is obtained only by seeking the principle of liberty in the main business of human life, that is to say, in the process by which men educate their responses and learn to control their environment.

There comes a time when even the reformer is compelled to face the fairly widespread suspicion of the average man that politics is an exhibition in which there is much ado about nothing.

In the end, advertising rests upon the fact that consumers are a fickle and superstitious mob, incapable of any real judgment as to what it wants or how it is to get what it thinks it likes.

A rational man acting in the real world may be defined as one who decides where he will strike a balance between what he desires and what can be done.

You and I are forever at the mercy of the census-taker and the census-maker. That impertinent fellow who goes from house to house is one of the real masters of the statistical situation. The other is the man who organizes the results.

You don't have to preach honesty to men with creative purpose. Let a human being throw the engines of his soul into the making of something, and the instinct of workmanship will take care of his honesty.

True opinions can prevail only if the facts to which they refer are known; if they are not known, false ideas are just as effective as true ones, if not a little more effective.