“I wondered what a man I had encountered the day before on the plane en route to Chicago’s O’Hare airport would have made of this. As he tried to push through a crowded aisle, he said loudly: “Life is never easy. And it’s never pleasant.” I couldn’t let this go. I looked up at him from my seat and said, “I do hope life gives you cause to change that opinion. Otherwise you may find that opinion walking ahead of you, giving you more and more reasons to believe it.”