乐观对于有意义的生活是无价的。坚信未来是积极的，你就可以投身于比你更伟大的事业中。

Three things you need: The ability to not give up something till it works， the ability to give up something that does not work， and the trust in other people to help you distinguish between the two.

创新是煤炭行业未来的关键，我们必须拥抱新技术和新理念。