youth goes to his guru, asking how to end the turmoil that he sees in the world around him. “I feel helpless. What should I do?” he asks.The guru thinks for a moment, then draws a deep line in the sand and tells his disciple: “You can’t erase it, you can’t cross it out, yet how can you negate its effect?” The puzzled youth says he can’t think of anything.The guru then draws a deeper, longer line parallel...