社会系统是个人与个人之间、群体与群体之间关系的网络。

"Memory is a strange thing, it doesn't work like I thought it did. We are so used to thinking of it as a camera or a tape recorder, but it's not like that at all. It's more like a painter, who adds and subtracts elements according to his own rules."

【译文】广泛学习钻研，坚定自己的志向，恳切地提出问题并且联系实际去思考，仁德就在其中了。

人类最伟大的追求是了解自己必须做什么才能成为一个人。

I am not trying to imitate a photograph; I am trying to make one.

这个行业的成功不仅以产量衡量，还要看社区的加强和环境的保护。

做出伟大工作的唯一方法就是热爱你所做的事。