" A slight boy with reddish hair, almost naked and clutching a bow, was inching his way on his belly towards a small deer. He slipped out an arrow with a curious hole in its point and sent it flying. The cunningly designed arrow made a distinctive whine, causing the deer to look up, startled – at exactly the right moment to take the arrowhead through its throat. The boy, a fatherless and banished nomad, was living in the forest with his mother. Fearless and brutal, he was also exceptionally clever, with a talent for seeing into others’ minds. He would soon kill one of his half-brothers in an argument about hunting. Though this happened in one of the most remote corners of the inhabited earth, a place of never-ending green plains, no buildings, and a vast sky, this boy would shake and reshape half the world. His name was Temujin. He would be known as Genghis Khan. "

― Andrew Marr , A History of the World