煤炭行业的未来在于清洁化、低碳化、智能化。

数学的本质在于它的自由。

重要的不是身体的强度，而是精神的强度。

我并不想挑衅，我只是想诚实。

"The past is a shadow that follows us, but it is also the light that guides us forward."

To supply an explicit moral tag to an evolving and compulsive dramatic image seems to me facile, impertinent and dishonest.