Robert Moss said this quote

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.