Sustainability must be at the core of every stone we extract, or we extract nothing at all.
可持续性必须成为我们开采每一块石料的核心，否则我们什么也不该开采。
惟有变化才是永恒的。
"Literature is the mirror that reflects the complexities of the human condition."
"The past is what you remember, imagine you remember, convince yourself you remember, or pretend you remember."
数学家的工作永无止境；总有更多的问题需要解决。
The universe we observe has precisely the properties we should expect if there is, at bottom, no design, no purpose, no evil and no good, nothing but blind, pitiless indifference.