Why I Belong and Why I Believe," in which he discusses his commitment to the church. I recommend it to everyone, Mormon or not. It's excellent and gave me much to think about.
I later finished the article in the Reader's Digest which is excellent, too, by the way. In it, Mr. Christensen shared a story about his days on the Oxford Basketball team and an important decision he had to make. President Monson shared the same story during our most recent General Conference, so I would have known Mr. Christensen was Mormon if I'd finished the article before searching the internet. I'm glad I didn't.
The thing I keep thinking about is that I could tell he was Mormon and I've never even met him! I hope people can tell that about me, too.