《易传·彖传上·观》
观示天之神道，而四时更替不出差错。圣人用神道来设立教化，天下万民皆顺服。
观天之神道，而四时不忒；圣人以神道设教，而天下服矣。
Contemplating the marvellous operations of spirits, the holy man gives lessons to the Empire. The people will all respond to his instructions.