I first read this book many years ago and found very challenging . I have since read more of his works and on my second reading which I read with a fresh heart and eyes, I truly believe this is the finest Christian book I have ever read. I gave a copy to a Christian sister last month. This is a oldie but a goody.
This is my first CS Lewis book and while an excellent book it is a very deep, difficult read, at least it was for me and I found myself having to go back and re-read some parts or chapters of the book to understand it, but I perservered and completed it! C S Lewis a former aetheist, full time philosopher, author and intellectual operates at a different intellectual plane than I do on a daily basis so it might be the last C S Lewis book I read.