It is not enough even to be able to speak the language of that nation by which they [books] are written, for there is a memorable interval between the spoken and the written language, the language heard and the language read. … The other [the language read] is the maturity and experience of that [the language heard]; if that is our mother tongue, this is our father tongue, a reserved and select expression, too significant to be heard by the ear, which we must be born again in order to speak.