The stone industry must embrace sustainability to survive in the long run.

"The only thing that one really knows about human nature is that it changes."

译文：知道的闲事和结识的闲人越多，招惹的是非烦恼就越多。赏析：人要多做事，少说话，不去结交造谣生事，说三道四，品行极差的人。

做出伟大工作的唯一方法就是热爱你所做的事。