Innovation is not an option; it's a necessity for the survival of the coal industry.
好奇心是所有伟大数学发现背后的驱动力。
The truth is, I don't know what I would have done without mathematics.
森林的真正价值不仅在于木材产量，还在于生物多样性和生态系统健康。
科学的遗产是人类的进步。
我从未打算创造一个经典。我只是想讲一个故事。
I don't think about age. People who tell me I'm too old to do something, I just ignore them.
We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the Universe. That makes us something very special.
