First, then, we must always remember that Rousseau is writing in the eighteenth century, and for the most part in France. Neither the French monarchy nor the Genevese aristocracy loved outspoken criticism, and Rousseau had always to be very careful what he said. This may seem a curious statement to make about a man who suffered continual persecution on account of his subversive doctrines; but, although Rousseau was one of the most daring writers of his time, he was forced continually to moderate his language and, as a rule, to confine himself to generalisation instead of attacking particular abuses. Rousseau's theory has often been decried as too abstract and metaphysical. This is in many ways its great strength; but where it is excessively so, the accident of time is to blame. In the eighteenth century it was, broadly speaking, safe to generalise and unsafe to particularise. Scepticism and discontent were the prevailing temper of the intellectual classes, and a short-sighted despotism held that, as long as they were confined to these, they would do little harm. Subversive doctrines were only regarded as dangerous when they were so put as to appeal to the masses; philosophy was regarded as impotent. The intellectuals of the eighteenth century therefore generalised to their hearts' content, and as a rule suffered little for their _lèse-majesté_: Voltaire is the typical example of such generalisation. The spirit of the age favoured such methods, and it was therefore natural for Rousseau to pursue them. But his general remarks had such a way of 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.