Thoughts on 'The Pilgrim's Progress'

I'm currently wading through John Bunyan's "The Pilgrim's Progress". If you ever decide to read this Christian allegory classic then I recommend the modern English version. However, even in the original version (published 1678), Bunyan's story of the character Christian's pilgrimage is an interesting and worthwhile read (not to mention theologically enlightening).

Update: If you are buying a used book, do a quick scan to make sure it is not missing pages 177-208. I enjoyed Part I of the book (Christian's Pilgrimage), but the only book more sleep inducing for me than Part II was Dickens' "The Pickwick Papers". "The Pickwick Papers" put me to sleep every night for months.