Book III 21
1 The Duke Ai asked Tsai Wo about the altars of the spirits of the land. Tsai Wo replied, ‘The Hsia sovereign planted the pine tree about them; the men of the Yin planted the cypress; and the men of the Chau planted the chestnut tree, meaning thereby to cause the people to be in awe.’
2 When the Master heard it, he said, ‘Things that are done, it is needless to speak about; things that have had their course, it is needless to remonstrate about; things that are past, it is needless to blame.’