Yin and yang can be hard to reconcile. The only reason that nature has managed to combine them is that this was necessary for it to exist at all, since neither yin nor yang can exist by themselves in any form at all. It was needed for nature to achieve this balance between yin and yang in order for it to be able to evolve at all. We must be cautious to retain this balance. Yin and yang cause one another; yet at the same time, they also avoid one another, as night shuns day and day shuns nigh

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