I have a stone that I keep on my desk. It’s not polished, or precious. It’s not a gem, or a moon rock – it’s just a piece of granite that I found one summer on a very special rafting trip. Each time I look at it I remember the moment I picked it up and slipped it into my pocket. Each time I hold it in my hand, feel its cool, rough edges and the heft of its weight, I travel back to that