Faith by hearing (but ONLY?)

Burroughs makes many great points about hearing the Word and the preaching of it, but then we come to this statement: "Faith comes by hearing, the Scriptures say, and never by reading" (152). Romans 10:17 definitely supports the first part of this claim, but is the second part true as well? Can't a person come to faith or grow in faith because of reading the Word of God or some exposition/commentary/thought on it? I think that would be the case, so why does Burroughs say this?