Your self-worth is determined by you. You don't have to depend on someone telling you who you are.
统计学的最终目标是从数据中提取信息。
译文:拥有的时候,常常要想到没有的日子,不要等到没有的日子,才想起拥有的日子。赏析:不管做任何事,人都要有居安思危,防患于未然的意识。
Organic farming is not a step back, but a leap forward in quality and responsibility.
The greatest happiness is to know the source of unhappiness.