The demand for certainty is one which is natural to man, but is nevertheless an intellectual vice.
Order, unity, and continuity are human inventions, just as truly as catalogues and encyclopedias.
Christ . . . said that a man who had looked after a woman lustfully had sinned as much as the man who had seduced her. How absurd!
There are certain things that our age needs. It needs, above all, courageous hope and the impulse to creativeness.
The road to happiness and prosperity lies in an organized diminution of work.
When all experts agree, you need to watch out.
The observer, when he seems to himself to be observing a stone, is really, if physics is to be believed, observing the effects of the stone upon himself.
It is a curious and painful fact that almost all the completely futile treatments that have been believed in during the long history of medical folly have been such as caused acute suffering to the patient. When anesthetics were discovered, pious people considered them an attempt to evade the will of God. It was pointed out, however, that when God extracted Adam's rib He put him into a deep sleep. This proved that anesthetics are all right for men; women, however, ought to suffer, because of the curse of Eve.
I am firm; YOU are obstinate; HE is a pig-headed fool.
There may be no good reasons for very many opinions that are held with passion.
This, however, is a passing nightmare; in time the earth will become again incapable of supporting life, and peace will return.
All exact science is dominated by the idea of approximation.
Many a man will have the courage to die gallantly, but will not have the courage to say, or even to think, that the cause for which he is asked to die is an unworthy one.
If we were all given by magic the power to read each other's thoughts, I suppose the first effect would be to dissolve all friendships.
What science cannot discover, mankind cannot know.
True happiness for human beings is possible only to those who develop their godlike potentialities to the utmost.
There is no greater reason for children to honour parents than for parents to honour children except, that while the children are young, the parents are stronger than children.
When I say that children should be told about sex, I do not mean that they should be told only the bare physiological facts; they should be told whatever they wish to know. There should be no attempt to represent adults as more virtuous than they are, or sex as occurring only in marriage. There is no excuse for deceiving children. And when, as must happen in conventional families, they find that their parents have lied, they lose confidence in them, and feel justified in lying to them.
War can only be abolished by the establishment of a world government.
The more you complain the longer God lets you live
What was exciting in the Victorian Age, would leave a man of franker epoch quite unmoved. The more prudes restrict the permissible degree of sexual appeal, the less is required to make such an appeal effective.
Descartes, the father of modern philosophy ... would never-so he assures us-have been led to construct his philosophy if he had had only one teacher, for then he would have believed what he had been told; but, finding that his professors disagreed with each other, he was forced to conclude that no existing doctrine was certain.
In former days, men sold themselves to the Devil to acquire magical powers. Nowadays they acquire those powers from science, and find themselves compelled to become devils. There is no hope for the world unless power can be tamed, and brought into the service, not of this or that group of fanatical tyrants, but of the whole human race, white and yellow and black, fascist and communist and democrat; for science has made it inevitable that all must live or all must die.
Choose your parents wisely.
Those who forget good and evil and seek only to know the facts are more likely to achieve good than those who view the world through the distorting medium of their own desires.
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