I love the idea of a second soul.
It does not matter if you are Jewish or not, believe in G-d or not, this book will make you want to slow down and allow yourself one day - a whole day - of true rest. No work, no negative thoughts, no running from one place to the other - but one spiritual day that can be spent meditating but most of all with learning through reading the Torah. A day dedicated to the soul. The Sabbath is a remarkable poetic book that I will read again.