外离相为禅，内不乱为定……外禅内定，是为禅定。
解析：禅定正义。
"The most powerful stories are often the simplest."
采矿效率不仅仅是成本问题，更是减少环境影响的问题。
Good econometrics is like good carpentry—it's all about using the right tool for the job.