加强国际合作，推动煤炭行业技术和管理水平的提升。

Every piece of plastic we produce should have a clear path to being reused or recycled.

The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when it be obeyed.

现代生物学运动的最终目标实际上是用物理和化学来解释所有生物学。

临终前与诸同志谈话，1925年3月11日