技术应该为生态服务，而不是反过来。

The soul needs only one thing: to do what the body is doing.

At the close of our studies， we knew all the past of physics， but nothing of the present and the future.

电报不仅是一项发明，而且是团结人类的手段。

The writer is either a practicing recluse or a delinquent, guilt-ridden one.

刚的东西容易折断，柔的东西因为可以卷曲所以不易折断。