Book excerpt: This book describes how love develops our spiritual and better nature and is the basis of happiness. God's love permeates the world and sustains it. We share a part of God's spirit and consciousness. His reality is love which we reflect and strive for. When we are loved and love another, our spiritual nature flourishes and is manifested in our behavior. Marriage is the home of love, mutual devotion and support. Through your love and devotion for each other, you achieve your finest potential. A deep and abiding love ultimately leads to sacrifice for one another. The happiness and welfare of your loved one is your happiness. When you have reached this stage of selfless love, you have found the essence of God's love. You will be beyond love and a part of God's everlasting spirit of love. You have realized that love is the only reality. All factors related to the development and sustainment of love and marriage, including issues such as adultery and divorce are discussed.