There is no difference between someone who eats too little and sees Heaven and someone who drinks too much and sees snakes..

Nine-tenths of the appeal of pornography is due to the indecent feelings concerning sex which moralists inculcate in the young; the other tenth is ph….

The more we realize our minuteness and our impotence in the face of cosmic forces, the more amazing becomes what human beings have achieved..

In former days, men sold themselves to the Devil to acquire magical powers. Nowadays they acquire those powers from science, and find themselves comp….

I used often to go to America during Prohibition, and there was far more drunkenness there then than before; the prohibition of pornography has much ….

Physics, owing to the simplicity of its subject matter, has reached a higher state of development than any other science..

Beggars do not envy millionaires, though of course they will envy other beggars who are more successful..

One of the most painful circumstances of recent advances in science is that each one makes us know less than we thought we did.

Morality in sexual relations, when it is free from superstition, consists essentially in respect for the other person, and unwillingness to use that ….

One of the chief triumphs of modern mathematics consists in having discovered what mathematics really is..

Indignation is a submission of our thoughts, but not of our desires..

Vanity is a motive of immense potency..

It is likely that America will be more important during the next century or two, but after that it may well be the turn of China..

Advocates of capitalism are very apt to appeal to the sacred principles of liberty, which are embodied in one maxim: The fortunate must not be restra….

Power, like vanity, is insatiable. Nothing short of omnipotence could satisfy it completely..

Love is a little haven of refuge from the world..

There is as much difference between a collection of mentally free citizens and a community molded by modern methods of propaganda as there is between….

... mathematical knowledge ... is, in fact, merely verbal knowledge. "3" means "2+1", and "4" means "3+1". Hence it follows (though the proof is long….

Logic must no more admit a unicorn than zoology can..

A drop of water is not immortal; it can be resolved into oxygen and hydrogen. If, therefore, a drop of water were to maintain that it had a quality o….

The rules of logic are to mathematics what those of structure are to architecture..