Responsible mining is not an option, it's an obligation we owe to our planet and future generations.
Life is fragile. We’re not guaranteed a tomorrow so give it everything you’ve got.
I like to think of mathematics as a kind of poetry.
有成就感的人会把世界看成一个友好的世界,并乐于看到它照原样保持下去,但失意者却会乐于看到世界急遽改变。