The unity of nature is not a hypothesis but a fact.
自然的统一性不是假设而是事实。
There is no such thing as a quality problem. There are only problems, and the solutions to those problems may involve quality considerations.
富裕的人以舍得施贫为美德,贫穷的人以无所欲求为美德,显贵的人以平易近人为美德,平凡的人以无视权势为美德