形容世事短暂如春梦，人情淡薄如秋云。
Market changes are always faster than plans; enterprises must have the ability to adapt quickly.
出自《抱朴子·博喻》。登高的人，要警惕的是爬高了会摔下来，渡深水的人，往往是因为船太重才出了祸。要适可而止，不要过于贪婪。
2012年：贝索斯致股东信《长远思考才能做到不可能的事情》
The future is not fixed; it is something we can shape with our knowledge and actions.
The first erroneous assumption is that quality means goodness, or luxury, or shininess, or weight. Quality means conformance to requirements.