Without a struggle, there can be no progress.

Without a struggle, there can be no progress.

I find it valid to understand man as an animal before I am prepared to know him as a man.

I find it valid to understand man as an animal before I am prepared to know him as a man.

There is no truth sure enough to justify persecution.

There is no truth sure enough to justify persecution.

...one of the tests of a theory is that, once grasped, it appears self-evident.

...one of the tests of a theory is that, once grasped, it appears self-evident.

The Don Quixote of one generation may live to hear himself called
the savior of society by the next.

The Don Quixote of one generation may live to hear himself called
the savior of society by the next.

For every social wrong there must be a remedy. But the remedy
can be nothing less than the abolition read more

For every social wrong there must be a remedy. But the remedy
can be nothing less than the abolition of the wrong.

Our understanding of the world is achieved more effectively by conceptual improvements than by discovery of new facts...

Our understanding of the world is achieved more effectively by conceptual improvements than by discovery of new facts...

When grubbing for necessities man is still an animal. He becomes uniquely human when he reaches out for the superfluous read more

When grubbing for necessities man is still an animal. He becomes uniquely human when he reaches out for the superfluous and extravagant.

...everything is too important ever to be entrusted to professional experts, because every organization of such professionals and every established read more

...everything is too important ever to be entrusted to professional experts, because every organization of such professionals and every established social organization becomes a vested-interest institution more concerned with its efforts to maintain itself or advance its own interests than to achieve the purpose that society expects it to achieve.