You must know God. The fundamental energy of the universe, or the universal prime energy means God. In relation to God, we human beings are a half. For mind and body, husband and wife, and parents and children, and among children, in the family, and in the tribe and nation, things are all the same. Without a serving heart, they cannot be one. If you eat some food and it tastes good, why does it taste good? When our body just has the plus and run out of the minus, an influx of a minus element produces a good taste. If a plus element comes in, it will be repelled and this will produce a bad taste. Good taste means that the oneness of a complete plus and complete minus stimulates and expands the cells.
(from the book: Father’s Words on the Divine Principle)