The historian must have a kind of faith that humanity will not and cannot perish.
历史学家必须怀有一种信念:人类不会也不能灭亡。
我不让成功冲昏头脑,我让它触动心灵。
I think it's important to have a positive attitude and to be optimistic.
我唯一能依靠的是自己的感知,而它总是在变化。
Modern quarrying must marry the wisdom of geology with the innovation of engineering.
I don’t need validation, I know my worth.