The Reason For God by Tim Keller was written for two types of people: people who have doubts about Christianity and Christians who have people whom they’d like to be able to share their faith with in a more thought-out, intelligent way. Keller takes several common doubts for the existence of God and deals with them individually in a respectful way. He then lays out several “clues” for God and concludes with why, when you look at what Christianity really asserts, it makes more sense of the life we see around us than anything else. Keller takes some pretty weighty philosophical and theological topics and puts them on them on the bottom shelf. This is an easy read with some great depth.