You may be surprised to discover that this gift certificate entitling you to spend a day responding to the special needs of your innermost being is actually the Fourth Commandment from the Book of Exodus, which says, "Remember the Sabbath day to keep it holy." Over the centuries it has been interpreted by scholars and teachers as an opportunity to let go of your everyday pressures and connect with a joyful, sacred way of being alive.

Leonard Felder, The Ten Challenges