" Unaware of them all, Temujin began to chant words he had not heard since old Chagatai had whispered them on a frozen night long before. The shaman’s chant spoke of loss and revenge, of winter, ice, and blood. He did not have to struggle to recall the words; they were ready on his tongue as if he had always known them. "

― Conn Iggulden , Genghis: Birth of an Empire (Conqueror, #1)