History of Friedrich II of Prussia, Volume 10 by Thomas Carlyle

Friedrich had not been long home again from Trakehnen and Preussen, when the routine of things at Reinsberg was illuminated by Visitors, of brilliant and learned quality; some of whom, a certain Signor Algarotti for one, require passing mention here. Algarotti, who became a permanent friend or satellite, very luminous to the Prince, and was much about him in coming years, first shone out upon the scene at this time, -- coming unexpectedly, and from the Eastward as it chanced.

On his own score, Algarotti has become a wearisome literary man to modern readers: one of those half-remembered men; whose books seem to claim a reading, and do not repay it you when given. Treatises, of a serious nature, ON THE OPERA; setting forth, in earnest, the potential "moral uses" of the Opera, and dedicated to Chatham; _Neutonianismo per le Donne_ (Astronomy for Ladies): the mere Titles of such things are fatally sufficient to us; and we cannot, without effort, nor with it, recall the brilliancy of Algarotti and them to his contemporary world.