Like a previous reader, I read the books years ago, loved them, and then lost/loaned them and am now replacing them to read again. C.S. Lewis is able to make you think "outside the box" and presents a view of the earth, man, and the sin issue in a new and profound way. Too many Christians do not understand the greatness of the God of the Universe and how or why that great God would have anything to do with sinful humans. As for the few "curse words" mentioned before, they are very minimal and not prevalent throughout the book and, when used, reflect the sinful nature of man. I gave the quality only 4 stars because the 3 books in 1 is a little bulky and hard to carry around. If you read at home or don't mind the bulk it is no problem.
I bought the series for my self years ago. Over the years it was lost in one of the many moves. I bought a replacement for Christmas for my son. He was excited. He had been looking for it. He loves sci-if especially when it includes the creator of science and space. CS Lewis is such a great author that it makes a great combination. Keep in mind when it was written for so of the space stuff.