A heavy sledder of a book enlivened with illustrations by Robert Lawson of Ferdinand fame. It's hard to believe this was the most-published book of the 17th-20th centuries, but it was. I kept thinking that it would make a great board game - Oh, too bad: you landed in the Slough of Despond - miss a turn. Oh, no! Hit by Apollyon's dart of fire! Go back three paces. The Delectable Mountains! Go ahead six paces. Oh, joy! You've reached Zion at last.