《管子·兵法》
它好像无有而实则存在，好像在后而实则在前。用 威 字，都不足以形容其作用。
若亡而存，若后而先，威不足以命之。
It seems to not exist but it does, it seems to be behind but it is actually in front. The word "majesty" is not enough to describe its function.