I tried the paleo diet, which is the caveman diet - lots of meat. I tried the raw food vegan diet. And I tried the calorie restriction diet, which is the idea is that if you eat very, very little - if you're on the verge of starvation, you will live a very long time. Whether or not you want to, of course, is the idea.

I've started to look at life differently. When you're thanking God for every little you - every meal, every time you wake up, every time you take a sip of water - you can't help but be more thankful for life itself, for the unlikely and miraculous fact that you exist at all.

There's a very passionate pro-chewing movement on the Internet called Chewdiasm. They say that we should be chewing 50 to 100 times per mouthful, which is insane. I tried that. It takes like a day and a half to eat a sandwich. But their basic idea is right. If you chew, you'll eat slower and you will get more nutrients.

Giulia Melucci has written a wonderfully funny and moving book. It's like Eat, Pray, Love, with recipes.

I’m not a fan of ‘write what you know.’ If you don’t know, find out. I knew nothing about the Bible before I started writing ‘The Year of Living Biblically.’ That was kind of the point – to learn.

If my former self and my current self met for coffee, they'd get along OK, but they'd both probably walk out of the Starbucks shaking their heads and saying to themselves, “That guy is kinda delusional.”

Very few people changed the world by sitting on their couch.