"Freedom is not something that anybody can be given. Freedom is something people take, and people are as free as they want to be."
科学进步的关键是坚持和开放的心态。
If something is too hard, we move on to something else.What could be more simpler than that?
人类最大的悲剧不是死亡，而是失去尊严。
可持续性不是一种选择；它是我们对后代的责任。