Dr. Johnson, in Boswell’s Life, tells us that the only person whose conversation he ever _sought_ for improvement was George Psalmanazar: yet who knows any thing of this extraordinary man now, but that he wrote about twenty volumes of the Universal History—invented a Formosan alphabet and vocabulary—being a really learned man, contrived to pass for an impostor, and died no one knows how or where! The well known author of the ‘Enquiry concerning Political Justice,’ in conversation has not a word to throw at a dog; all the stores of his understanding or genius he reserves for his books, and he has need of them, otherwise there would be _hiatus in manuscriptis_. He says little, and that little were better left alone, being both dull and nonsensical; his talk is as flat as a pancake, there is no leaven in it, he has not dough enough to make a loaf and a cake; he has no idea of any thing till he is wound up, like a clock, not to speak, but to write, and then he seems like a person risen from sleep or from the dead. The author of the _Diversions of Purley_, on the other hand, besides being the inventor of the theory of grammar, was a politician, a wit, a master of conversation, and overflowing with an _interminable babble_—that fellow had cut and come again in him, and ‘Tongue with a garnish of brains;’ but it only served as an excuse to cheat posterity of the definition of a verb, by one of those conversational _ruses de guerre_ by which he put off his guests at Wimbledon with some teazing equivoque which he would explain the next time they met—and made him die at last with a nostrum in his mouth! The late Professor Porson was said to be a match for the Member for Old Sarum in argument and raillery:—he was a profound scholar, and had wit at will—yet what did it come to? His jests have evaporated with the marks of the wine on the tavern table; the page of Thucydides or Æschylus, which was stamped on his brain, and which he could read there with equal facility backwards or forwards, is contained, after his death, as it was while he lived, just as well in the volume on the library shelf. The man of perhaps the greatest ability now living is the one who has not only done the least, but who is actually incapable of ever doing any thing worthy of him—unless he had a hundred hands to write with, and a hundred mouths to utter all that it hath entered into his heart to conceive, and centuries before him to embody the endless volume of his waking dreams. Cloud rolls over cloud; one train of thought suggests and is driven away by another; theory after theory is spun out of the bowels of his brain, not like the spider’s web, compact and round, a citadel and a snare, built for mischief and for use; but, like the gossamer, stretched out and entangled without end, clinging to every casual object, flitting in the idle air, and glittering only in the ray of fancy. No subject can come