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 restrained in the exercise of tyranny over the unfortunate.

The only thing that will redeem mankind is cooperation.

Morality in sexual relations, when it is free from superstition, consists essentially in respect for the other person, and unwillingness to use that person solely as a means of personal gratification, without regard to his or her desires.

The main thing needed to make men happy is intelligence.

Undoubtedly the desire for food has been and still is one of the main causes of political events.

Philosophers, for the most part, are constitutionally timid, and dislike the unexpected. Few of them would be genuinely happy as pirates or burglars. Accordingly they invent systems which make the future calculable, at least in its main outlines.

It is because modern education is so seldom inspired by a great hope that it so seldom achieves great results.