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At the spring of the River Ar I named you,' the mage said, 'a stream that falls from the mountain to the sea. A man would know the end he goes to, but he cannot know it if he does not turn, and return to his beginning, and hold that beginning in his being. If he would not be a stick whirled and whelmed in the stream, he must be the stream itself, all of it, from its spring to its sinking in the sea. You returned to Gont, you returned to me, Ged. Now turn clear round, and seek the very source, and that which lies before the source. There lies your hope of strength.
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Ursula K. Le Guin (A Wizard of Earthsea (Earthsea Cycle, #1))