"The Sabbath" by Abraham Joshua Heschel

This book is an essential must-have for anyone curious about the Sabbath.  In this short book of quick easy-to-follow chapters, readers begin to understand what the Sabbath is all about.  Through carefully woven language, each page is almost a work of art.  Speaking of art, there are beautiful black-and-white illustrations throughout that are quite thought-provoking.  The biggest concept I got out of this book is that the Sabbath is centered around time instead of space.  Space is ordinary, while time is holy.  During the Sabbath, man is blessed with a taste of eternity.