typeracer

The largest library in disorder is not so useful as a smaller but orderly one; in the same way the greatest amount of knowledge, if it has not been worked out in one's own mind, is of less value than a much smaller amount that has been fully considered. For it is only when a man combines what he knows from all sides, and compares one truth with another, that he completely realizes his own knowledge and gets it into his power. A man can only think over what he knows, therefore he should learn something; but a man only knows what he has pondered.