Many a marriage hardly differs from prostitution, except being harder to escape from.
The essence of good manners consists in making it clear that one has no wish to hurt. When it is clearly necessary to hurt, it must be done in such a way as to make it evident that the necessity is felt to be regrettable.
The Christian view that all intercourse outside marriage is immoral was, as we see in the above passages from St. Paul, based upon the view that all sexual intercourse, even within marriage, is regrettable. A view of this sort, which goes against biological facts, can only be regarded by sane people as a morbid aberration. The fact that it is embedded in Christian ethics has made Christianity throughout its whole history a force tending towards mental disorders and unwholesome views of life.
There is an artist imprisoned in each one of us. Let him loose to spread joy everywhere.
There will still be things that machines cannot do. They will not produce great art or great literature or great philosophy; they will not be able to discover the secret springs of happiness in the human heart; they will know nothing of love and friendship.
Of these austerer virtues the love of truth is the chief, and in mathematics, more than elsewhere, the love of truth may find encouragement for waning faith. Every great study is not only an end in itself, but also a means of creating and sustaining a lofty habit of mind; and this purpose should be kept always in view throughout the teaching and learning of mathematics.
There are infinite possibilities of error, and more cranks take up fashionable untruths than unfashionable truths.
In democratic countries, the most important private organizations are economic. Unlike secret societies, they are able to exercise their terrorism without illegality, since they do not threaten to kill their enemies, but only to starve them.
Laughter is the most inexpensive and most effective wonder drug. Laughter is a universal medicine.
When two men of science disagree, they do not invoke the secular arm; they wait for further evidence to decide the issue, because, as men of science, they know that neither is infallible. But when two theologians differ, since there is no criteria to which either can appeal, there is nothing for it but mutual hatred and an open or covert appeal to force.
The very best proof that something can be done is that someone has already done it.
What hunger is in relation to food, zest is in relation to life.
What makes a free thinker is not his beliefs, but the way in which he holds them. If he holds them because his elders told him they were true when he was young, or if he holds them because if he did not he would be unhappy, his thought is not free; but if he holds them because, after careful thought, he finds a balance in their favor, then his thought is free, however odd his conclusions may seem.
My sad conviction is that people can only agree about what they're not really interested in.
A widespread belief is more often likely to be foolish than sensible.
When all experts agree, you need to watch out.
When Benjamin Franklin invented the lightning-rod, the clergy, both in England and America, with enthusiastic support of George III, condemned it as an impious attempt to defeat the will of God.
Conventional people are roused to fury by departure from convention, largely because they regard such departure as a criticism of themselves.
Life and hope for the world are to be found only in the deeds of love.
Really high-minded people are indifferent to happiness, especially other people's.
The idea that the poor should have leisure has always been shocking to the rich.
I am not myself in any degree ashamed of having changed my opinions.
We know too much and feel too little. At least, we feel too little of those creative emotions from which a good life springs.
Religion may in most of its forms be defined as the belief that the gods are on the side of the government.
If we spent half an hour every day in silent immobility, I am convinced that we should conduct all our affairs, personal, national, and international, far more sanely than we do at present.
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