Charles Platts, Dictionary of National Biography… (1912)
“ The latter volume was Earle's most popular work; it largely helped to popularise the results of the new science of comparative philology, as applied to the English language. With the later developments of comparative philology Earle hardly kept pace. He was always more interested in tracing the development of language as an instrument of thought, and in analysing the various elements which had contributed to the formation of English, than in purely philological science. ”
