David Copperfield by Charles Dickens Chapter 16 Page 38

Some of the higher scholars boarded in the Doctor’s house, and through them I learned, at second hand, some particulars of the Doctor’s history — as, how he had not yet been married twelve months to the beautiful young lady I had seen in the study, whom he had married for love; for she had not a sixpence, and had a world of poor relations (so our fellows said) ready to swarm the Doctor out of house and home. Also, how the Doctor’s cogitating manner was attributable to his being always engaged in looking out for Greek roots; which, in my innocence and ignorance, I supposed to be a botanical furor on the Doctor’s part, especially as he always looked at the ground when he walked about, until I understood that they were roots of words, with a view to a new Dictionary which he had in contemplation.