It is remarkable how much long-term advantage people like us have gotten by trying to be consistently not stupid, instead of trying to be intelligent.
“物质”不是唯一的事实标准：还存在心理事实，而且无法以任何的物质方式来解释、证明、或辩驳它。
最可持续的产品是使用寿命最长的产品。