The most troublesome problem which confronts social engineering is how to provide for the untalented and, what is equally important, how to provide against them.

We are least open to precise knowledge concerning the things we are most vehement about.

Vehemence is the expression of a blind effort to support and uphold something that can never stand on its own. Whether it is our own meaningless self we are upholding, or some doctrine devoid of evidence, we can do it only in a frenzy of faith.

We lie loudest when we lie to ourselves.

Nature attains perfection, but man never does.

For men to plunge headlong into an undertaking of vast change, they must be intensely discontented yet not destitute, and they must have the feeling that by the possession of some potent doctrine, infallible leader or some new technique they have access to a source of irresistible power.

There is nothing more explosive than a skilled population condemned to inaction. Such a population is likely to become a hotbed of extremism and intolerance, and be receptive to any proselytizing ideology, however absurd and vicious, which promises vast action.