If there had been a global unified world in which Adam's birthday, his wedding day, and the day of his death were commemorated, the human race who commemorated these days would have been a unified set of siblings and one people. That is to say, they would have become a people who live in one world. If that had happened, all the customs of Adam's life would have been adopted in human history, and the culture formed at that time would have been inherited eternally. (31:231)