The Voyage of the Dawn Treader

"Oh, Aslan," said Lucy. "Will you tell us how to get into your country from our world?"

"I shall be telling you all the time," said Aslan. "But I will not tell you how long or short the way will be; only that it lies across a river. But do not fear that, for I am the great Bridge Builder."

—C. S. Lewis, The Voyage of the Dawn Treader