简单比复杂更难：你必须努力工作，才能让你的思维变得清晰，以便使事情变得简单。
Simple can be harder than complex: You have to work hard to get your thinking clean to make it simple.
The highest purpose is to have no purpose at all. This puts one in accord with nature in her manner of operation.
Sustainability isn’t a choice—it’s the only path forward for any industry tied to natural resources.
可持续性不是一种选择——它是任何依赖自然资源的行业唯一的前进道路。