... Practical people have little idea of the practical ability required to write a large book, and especially a large history. Long before you get to the pen, there is an immensity of pure business: heaps of material are strewn every where; but they lie in disorder, unread, uncatalogued, unknown. It seems a dreary waste of life to be analysing, indexing, extracting works and passages, in which one per cent of the contents are interesting, and not half of that per centage will ultimately appear in the flowing narrative.