-by C.S. Lewis
Well ... this one has been on my to-read list for more than a year now. I picked it up a while ago, but I was just reading it to finish it, and I couldn't get through it. It was ... difficult, a year ago. Now, when I picked it up on the way to our family vacation, I was so interested at the way he put things! I want to say I couldn't put it down, but I could, so I'm not going to say that.
There isn't any easy way to put it, you just have to read it. If it may be a bit difficult to read, or if you find yourself spacing out (as I found myself doing a couple of times), just start over and read the last paragraph again. It makes absolute sense, I promise you.
One of the things I will do now is recommend this book not only to my Christian friends, but my non-Christian friends as well. If they can get past the title, and read it with an open mind, it would do such a better job than I could at explaining things. (Because, as you know, I'm not very good at that.)