Introduction -- The evidence on happiness -- Relative income and happiness -- Happiness and ethics -- Happiness and good development -- Happiness-oriented societal development under the premise of democracy -- Orientation for a knowledgeable world

1. Introduction -- 2. The evidence on happiness -- 3. Relative income and happiness -- 4. Happiness and ethics -- 5. Happiness and good development -- 6. Happiness-oriented societal development under the premise of democracy -- 7. Orientation for a knowledgeable world.