The intent or purpose of this book was originally intended to be a science fiction written to meet a bet, but it ended up being the first book in a trilogy with the theme of describing how pitiful human beings are and how far from our original purpose on the earth - that is to tend it and make it plentiful, and to care for one another. C.S. Lewis was a Christian and this Christian theme permeates all of his novels. The theme of the book is that earth is seen by inhabitants of another planet as being valuable, but the humans are a problem when they think of inhabiting our planet. Oyarsa may be an angel and seems to care for the earth and sends Ransom back with a mission to make the earth better. This theme of bettering the planet Earth is the main one, plus Lewis has...
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