Diderot and D'Alembert both of them remained poor, but they were never hangers-on. They did not look to patrons, nor did they bound their vision by Versailles. They were the first to assert the lawful authority of the new priesthood. They revolted deliberately and in set form against the old system of suitorship and protection. "Happy are men of letters," wrote D'Alembert, "if they recognise at last that the surest way of making themselves respectable is to live united and almost shut up among themselves; that by this union they will come, without any trouble, to give the law to the rest of the nation in all affairs of taste and philosophy; that the true esteem is that which is awarded by men who are themselves worthy of esteem.... As if the art of instructing and enlightening men were not, after the too rare art of good government, the noblest portion and gift in human reach."[102] This consciousness of the power and exaltation of their calling, which men of letters now acquired, is much more than the superficial fact which it may at first seem to be. It marked the rise of a new teaching order and the supersession of the old. The highest moral ideas now belonged no longer to the clergy, but to the writers; no longer to official Catholicism, but to that fertilising medley of new notions about human knowledge and human society which then went by the name of philosophy. What is striking is that the ideas sown by philosophy became eventually the source of higher life in Catholicism. If the church of the revolution showed something that we may justly admire, it was because the encyclopaedic band had involuntarily and inevitably imparted a measure of their own clearsightedness, fortitude, moral energy, and spirit of social improvement, to a church which was, when they began their work, an abominable burden on the spiritual life of the nation. If the Catholicism of Chateaubriand, of Lamennais, of Montalembert, was a different thing from the Catholicism of a Dubois, or a Rohan, from the vile corruptions of the Jesuits and the grovelling superstitions of the later Jansenists, it was the execrated freethinkers whom the church and mankind had to thank for the change. The most enlightened Catholic of to-day ought to admit that Voltaire, Diderot, Rousseau, were the true reformers of his creed. They supplied it with ideas which saved it from becoming finally a curse to civilisation. It was no Christian prelate, but Diderot who burst the bonds of a paralysing dogma by the magnificent cry, _Detruisez ces enceintes qui retrecissent vos idees! Elargissez Dieu!_[103] We see the same phenomenon in our own day. The Christian churches are assimilating as rapidly as their formula will permit, the new light and the more generous moral ideas and the higher spirituality of teachers who have abandoned all churches, and who are systematically denounced as enemies of the souls of men. _Sic vos non vobis mellificatis apes!_ These transformations of religion by leavening