Revolution as an ideal concept always preserves the essential content of the original thought: sudden and lasting betterment.

A superstition which pretends to be scientific creates a much greater confusion of thought than one which contents itself with simple popular practices.

The susceptibility of the average modern to pictorial suggestion enables advertising to exploit his lessened power of judgment.

The repudiation of the primacy of understanding means the repudiation of the norms of judgment as well, and hence the abandonment of all ethical standards.

Physical nature lies at our feet shackled with a hundred chains. What of the control of human nature? Do not point to the triumphs of psychiatry, social services or the war against crime. Domination of human nature can only mean the domination of every man by himself.

Play is a uniquely adaptive act, not subordinate to some other adaptive act, but with a special function of its own in human experience.