Later polemic works, inspired by those above noticed, reproduce some of their arguments, but with an advance in literary skill, as in the anonymous Bon Sens given forth (1772) by Diderot and d'Holbach as the work of Jean Meslier, but really an independent compilation, embodying other arguments with his, and putting the whole with a concision and brilliancy to which he could make no approach. Prémontval, a bad writer, [1036] contrives nonetheless to say many pungent things of a deistic order in his Diogène de d'Alembert, and, following Marie Huber, puts forward the formula of religion versus theology, which has done so much duty in the nineteenth century. Of the whole literature it is not too much to say that it covered cogently most of the important grounds of latter-day debate, from the questions of revelation and the doctrine of torments to the bases of ethics and the problem of deity; and it would be hard to show that the nineteenth century has handled the main issues with more sincerity, lucidity, or logic than were attained by Frenchmen in the eighteenth. To-day, no doubt, in the light of a century and a-half of scientific, historic, and philosophic accumulation, the rationalist case is put with more profundity and accuracy by many writers than it could be in the eighteenth century. But we have to weigh the freethinkers of that age against their opponents, and the French performers against those of other countries, to make a fair estimate. When this is done their credit is safe. When German and other writers say with Tholuck that "unbelief entered Germany not by the weapons of mere wit and scoffing as in France; it grounded itself on learned research," [1037] they merely prove their ignorance of French culture-history. An abundance of learned research in France preceded the triumphant campaign of Voltaire, who did most of the witty writing on the subject; and whose light artillery was to the last reinforced by the heavier guns of d'Holbach. It is only in the analysis of the historical problem by the newer tests of anthropology and hierology, and in the light of latterly discovered documents, that our generation has made much advance on the strenuous pioneers of the age of Voltaire. And even in the field of anthropology the sound thinking of Fontenelle and De Brosses long preceded any equally valid work by rationalists in Germany; though Spencer of Cambridge had preceded them in his work of constructive orthodoxy.