When I was five, a tree was my best friend. An old peppercorn on Grandpa's little farm. I'd haul myself into its calloused arms and hide from the world in its foliage. Apart from the pleasure of looking down on unsuspecting adults, I could be Robin Hood in a one-tree Sherwood Forest or Johnny Weissmuller in his jungle. I fell out of my friend once while Tarzan-ing. Gashed a large chunk from a leg. Almost 70 years later, there's still a scar.