We have no right to assume that any physical laws exist, or if they have existed up to now, that they will continue to exist in a similar manner in the future.
我们无权假设任何物理定律存在,或者即使它们至今存在,它们将来也会以类似的方式继续存在。
The future of coal lies in clean and efficient utilization.
Civilization is not inherited; it has to be learned and earned by each generation anew.