The knowledge of the ancients was perfect. How perfect? I will tell you. At first they did not yet know that there were things. This is the most perfect knowledge; nothing can be added. Next they knew things but did not yet make distinctions between them. Next they made distinctions between them but did not yet pass judgements upon them. When judgement was passed, Tao was destroyed. With the destruction of Tao, individual preferences come into being.
