Sustainable mining isn't an option anymore - it's our responsibility to future generations.
数学的本质在于它的自由。
声音是一种在你体内的乐器。它是唯一你看不见的乐器。
A nation's destiny is in its own hands.
The right of nature... is the liberty each man hath, to use his own power, as he will himself, for the preservation of his own nature; that is to say, of his own life.
Deep into that darkness peering, long I stood there wondering, fearing, doubting, dreaming dreams no mortal ever dared to dream before.