C. S. Lewis is one of those few writers whose works will be read, studied, and enjoyed 100, 200, 500 years after his death. He is both a fantastic story-teller and a brilliant philosopher--thus, his works deal with both the mundane and the sublime, often at the same time.
Perelandra is a good example of Lewis's ability to tell a good story while getting a higher point across. The second installment in his celebrated Space Trilogy (make sure you read "Out of the Silent Planet" first) finds his hero, Ransom, swept away from Earth again on a mysterious mission to the planet Perelandra. Without giving too much of the story away, Ransom finds himself given the seemingly impossible task of preventing evil from Earth from polluting the pristine, unearthly paradise of Perelandra. To carry out this mission, Ransom finds himself grappling, both intellectually and physically, with a force of pure evil.
Let the reader beware: Perelandra is written in a more archaic style than we are used to today, and thus may be a difficult read for someone with a short-attention span. For a reader with an expansive imagination and a patient love for detailed descriptive writing, the book is a treasure and will be highly enjoyed.