The King of Elfland's Daughter by Lord Dunsany

There passed ten years over the fields we know; and Orion grew and learned the art of Oth, and had the cunning of Threl, and knew the woods and the slopes and vales of the downs, as many another boy knows how to multiply figures by other figures or to draw the thoughts from a language not his own and to set them down again in words of his own tongue. And little he knew of the things that ink may do, how it can mark a dead man's thought for the wonder of later years, and tell of happenings that are gone clean away, and be a voice for us out of the dark of time, and save many a fragile thing from the pounding of heavy ages; or carry to us, over the rolling centuries, even a song from lips long dead on forgotten hills. Little knew he of ink; but the touch of a roe deer's feet on dry ground, gone three hours, was a clear path to him, and nothing went through the woods but Orion read its story. And all the sounds of the wood were as full of clear meaning to him as are to the mathematician the signs and figures he makes when he divides his millions by tens and elevens and twelves. He knew by sun and moon and wind what birds would enter the wood, he knew of the coming seasons whether they would be mild or severe, only a little later than the beasts of the wood themselves, which have not human reason or soul and that know so much more than we.

And so he grew to know the very mood of the woods, and could enter their shadowy shelter like one of the woodland beasts. And this he could do when he was barely fourteen years; and many a man lives all his years and can never enter a wood without changing the whole mood of its shadowy ways. For men enter a wood perhaps with the wind behind them, they brush against branches, step on twigs; speak, smoke, or tread heavily; and jays cry out against them, pigeons leave the trees, rabbits pad off to safety, and far more beasts than they know slip on soft feet away from their coming. But Orion moved like Threl, in shoes of deerskin with the tread of a hunter. And none of the beasts of the wood knew when he was come.