If material force integrates, its visibility becomes effective and physical form appears. If material force does not integrate, its visibility is not effective and there is no physical form. While material force is integrated, how can one not say that it is temporary? While it is disintegrated, how can one hastily say that it is non-being? For this reason, the sage, having observed phenomena and examined above and below, only claims to know the causes of what is hidden and what is manifest but does not claim to know the causes of being and non-being.

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