- “If we find ourselves with a desire that nothing in this world can satisfy, the most probable explanation is that we were made for another world.”
- ―C. S. Lewis
C.S. Lewis (born Clive Staples Lewis and called Jack by his friends) (November 29, 1898 - November 22, 1963) was a good friend of J.R.R. Tolkien, and the author of The Chronicles of Narnia. Lewis was a member of the small literary society The Inklings, along with Tolkien and Tolkien's son Christopher.
Similarities with Tolkien's works
There are some similar themes between the major works of Lewis and Tolkien, which might be no coincidence - since they are known to have, while writing their respective books, shared their "work in progress" with each other with objection to the other "borrowing". In the preface to That Hideous Strength, Lewis makes an explicit reference to Tolkien's Númenor (which Lewis spelled "Numinor") and linked it with the plot of his own book: The magic of the wizard Merlin, an important character in the book, is mentioned as being derived from that of magical refugees who arrived in prehistoric Britain from the sunk Númenor/Atlantis.
Further can be noted that the chapter "Mount Doom" of The Return of the King - in which occurs the climatic final battle for the ring between Gollum and Frodo - has a close parallel in Lewis' Perelandra. In both, a battle takes place in an underground chamber near a chasm where volcanic fire is burning; both battles end with an antagonist falling into fire and being utterly consumed; and in both books this outcome is vital in saving a world from evil's future domination.
Some entities share similar names, for example, in The Lord of the Rings there is an inn named "The Prancing Pony" located in Bree. In C.S. Lewis' Narnia, there is a prancing, talking pony named Bree. In Middle-earth there are the Ettenmoors, and in Narnia a land called Ettinsmoor.