Here he continued some sixteen years; very busy, very successful in medicine and literature; but "tormented with hypochondria;"--having indeed an immense conceit of himself, and generally too thin a skin for this world. Here he first wrote his Book on SOLITUDE, a Book famed over all the world in my young days (and perhaps still famed); he wrote it a second time, MUCH ENLARGED, about thirty years after: [_Betrachtungen uber die Einsamkeit, von Doctor J. G. Zimmermann, Stadtphysicus in Brugg_ (Zurich, 1756),--as yet only "1 vol. 8vo, price 6d." (5 groschen); but it grew with years; and (Leipzig, 1784) came out remodelled into 4 vols.;--was translated into French, "with many omissions," by Mercier (Paris, 1790); into English from Mercier (London, 1791). "Zurich, 1763-1764:" by and by, one "Dobson did it into English."] I read it (in the curtailed English-Mercier form, no Scene in it like the above), in early boyhood,--and thank it for nothing, or nearly so. Zimmermann lived much alone, at Brugg and elsewhere; all his days "Hypochondria" was the main company he had:--and it was natural, but UNprofitable, that he should say, to himself and others, the best he could for that bad arrangement: poor soul! He wrote also on MEDICAL EXPERIENCE, a famed Book in its day;" also on NATIONAL PRIDE; and became famed through the Universe, and was Member of infinite Learned Societies. All which rendered dull dead Brugg still duller and more dead; unfit utterly for a man of such sublime accomplishments. Plenty of Counts Stadion, Kings of Poland even, offered him engagements; eager to possess such a man, and deliver him from dull dead Brugg; but he had hypochondria, and always feared their deliverance might be into something duller. At length,--in his fortieth year, 1768,--the place of Court-Physician (HOFMEDICUS) at Hanover was offered him by George the Third of pious memory, and this he resolved to accept; and did lift anchor, and accept and occupy accordingly.