"We are told that God has spoken. Where? In a book? We have tried it, and it disappoints; it disappoints, that most holy and blessed gift, not from fault of its own, but because it is used for a purpose for which it was not given. The Ethiopian's reply, when St. Philip asked him if he understood what he was reading, is the voice of nature; "How can I, unless some man shall guide me?" The Church undertakes that office; she does what none else can do, and this is the secret of the power."