At any given moment there is an orthodoxy, a body of ideas of which it is assumed that all right-thinking people will accept without question. It is not exactly forbidden to say this, that or the other, but it is 'not done' to say it... Anyone who challenges the prevailing orthodoxy finds himself silenced with surprising effectiveness. A genuinely unfashionable opinion is almost never given a fair hearing, either in the popular press or in the high-brow periodicals.

War is war. The only good human being is a dead one.

What is not hereditary cannot be permanent.

People invent new machines and improve existing ones almost unconsciously, rather as a Somnambulist will go walking in his sleep. The interesting puzzle in our times is that we so willingly sleepwalk through the process of reconstituting the conditions of human existence.

It said what he would have said, if it had been possible for him to set his scattered thoughts in order. It was the product of a mind similar to his own, but enormously more powerful, more systematic, less fear-ridden. The best books, he perceived, are those that tell you what you know already.

Man is the only real enemy we have. Remove Man from the scene, and the root cause of hunger and overwork is abolished forever.

The consequences of every act are included in the act itself.