He dealt with medical questions, and did not think it beneath his dignity to examine the merits of a mouth-wash. He wrote many pages on Tronchin, the great physician, and on inoculation. Here, surely, was one of the chances to enlighten kings--kings who, more than any other class of men, suffered and died from the ignorant tyranny of their physicians, and who had to wait eighteen centuries before any man told them that fresh air was a valuable property, and health a kingdom to be taken by temperance, soberness, and chastity. If there was a scientific marvel in the air, such as ventriloquism, why, of course, Grimm must tell his correspondents about that; and the music, French or Italian, of the capital, must also receive its comment. Then there was the news of the day, and of Academical disputes, and, though Grimm had declared he would not report them, occasional piquant anecdotes with a sufficient spice of scandal in them to have pleased King Frederick. He further drew pen-portraits of celebrities. Nothing could be more fair and shrewd than Grimm’s character-sketches. He solves in them the supreme difficulty--how to be at once honest and charitable. Next there is an epigram to be reported. While a charade that has amused a Parisian line lady is surely good enough for a German duchess! Politics were supposed to be excluded, and they were excluded in the sense that there were no remarks on public events until those events had become so notorious that the ‘Correspondence’ did not add to its readers’ knowledge of them. But though, or because, he wrote for governors, Grimm adduced his theories on government, he himself believing in the divine rights neither of the ‘Social Contract’ nor of kings. To his views on tolerance, finance, and education, he gave utterance soberly, thoughtfully, and at length. He had a subscription list in his paper for Voltaire’s unfortunate protégés, the Calas; and if his pen was to flow freely, as he had promised, how could he stay his indignation against the trial and the sacrifice of the Chevalier de la Barre? To the friend and intimate of the philosophers, the most ordinary event suggested philosophical reflections. His religious views could hardly help appearing; but Grimm’s was a quiet agnosticism, and had nothing in common with the excited certainties of Diderot’s unbelief. He had, of course, his theories on women, on art, and on languages; and he aired them all. He brought out, in the same tantalising fashion in which serials are now produced in weekly illustrated newspapers, Diderot’s two novels.