bearing very obvious particular applications, and were so obviously inspired by a particular attitude towards the government of his day, that even philosophy became in his hands unsafe, and he was attacked for what men read between the lines of his works. It is owing to this faculty of giving his generalisations content and actuality that Rousseau has become the father of modern political philosophy. He uses the method of his time only to transcend it; out of the abstract and general he creates the concrete and universal.
Secondly, we must not forget that Rousseau’s theories are to be studied in a wider historical environment. If he is the first of modern political theorists, he is also the last of a long line of Renaissance theorists, who in turn inherit and transform the concepts of medieval thought. So many critics have spent so much wasted time in proving that Rousseau was not original only because they began by identifying originality with isolation: they studied first the Social Contract by itself, out of relation to earlier works, and then, having discovered that these earlier works resembled it, decided that everything it had to say was borrowed. Had they begun their study in a truly historical spirit, they would have seen that Rousseau’s importance lies just in the new use he makes of old ideas, in the transition he makes from old to new in the general conception of politics. No mere innovator could have exercised such an influence or hit on so much truth. Theory makes no great leaps; it proceeds to new concepts by the adjustment and renovation of old ones. Just as theological writers on politics, from Hooker to Bossuet, make use of Biblical terminology and ideas; just as more modern writers, from Hegel to Herbert Spencer, make use of the concept of evolution, Rousseau uses the ideas and terms of the Social Contract theory. We should feel, throughout his work, his struggle to free himself from what is lifeless and outworn in that theory, while he develops out of it fruitful conceptions that go beyond its scope. A too rigid literalism in the interpretation of Rousseau’s thought may easily reduce it to the possession of a merely “historical interest”: if we approach it in a truly historical spirit, we shall