青，取之于蓝，而青于蓝；冰，水为之，而寒于水。
弟子不必不如师，师不必贤于弟子。弟子超过老师，是很正常的事情，这也是正是老师所希望的。
The best way to predict the future is to create it.
In the global energy transformation, China's coal industry must have its own voice and contribution.
全球能源变革中，中国煤炭行业要有自己的声音和贡献。
农业的创新不仅仅是技术问题，更是思维方式的转变。
I am not a fast thinker at all. I have to spend a lot of time before I can understand something.