Admirable in the salons and incomparably friendly, flexible, with gentle epigrams of sweet humour, elegant flattery, a good writer in both French and Italian, a profound mathematician, geometer, physicist, knowing history through and through, a very analytic and comparative mind...; more expert than an auctioneer or a bookseller in the science of books, this man had only one misfortune: he was essentially a thief.
Admirable sa Salon at incomparably friendly, flexible, may maamo epigrams ng matamis na katatawanan, matikas bola, isang magandang writer sa mga French at Italian, isang malalim dalubbilang, geometrisyan, pisisista, alam kasaysayan sa pamamagitan at sa pamamagitan ng, ng isang napaka-analytic at comparative isip. ..; Mas eksperto kaysa sa isang auctioneer o ng mga aklat sa agham ng mga libro, ito man ay isa lamang kapahamakan: siya ay mahalagang isang magnanakaw.