If freedom is to flourish the philosophic foundations of a free society must be kept a living intellectual issue and its implementation a task which challenges the ingenuity and imagination of the liveliest minds.

A claim for equality of material position can be met only by a government with totalitarian powers.

The chief point we must remember is that the great and rapid advance of the physical sciences took place in fields where it proved that explanation and prediction could be based on laws which accounted for the observed phenomena as functions of comparatively few variables - either particular facts or relative frequencies of events.

Nothing is more securely lodged than the ignorance of the experts.

Social justice rests on the hate towards those that enjoy a comfortable position, namely, upon envy.

Liberty and responsibility are inseparable.

The social sciences, like much of biology but unlike most fields of the physical sciences, have to deal with structures of essential complexity, i.e. with structures whose characteristic properties can be exhibited only by models made up of relatively large numbers of variables.