不要害怕失败，因为每一次失败都是成功的练习。
Don't be afraid of failure, because every failure is practice for success.
"The only thing that could spoil a day was people. People were always the limiters of happiness except for the very few that were as good as spring itself."
一种新的科学真理并不是通过说服其对手并让他们看到光明而取得胜利，而是因为其对手最终死去，一个熟悉它的新一代人成长起来。
可持续性不是一种选择；它是我们对下一代的责任。