The only way to do great work is to love what you do.

The only service a friend can really render is to keep up your courage by holding up to you a mirror in which you can see a noble image of yourself.

The sea is not only a source of resources but also a source of life and inspiration.

最好的科学是用开放的心态和学习的意愿完成的。

There are some natures too noble to curb and too lofty to bend.

效率是工程的诗歌。