有时最重要的实验是那些失败的实验，因为它们教会我们什么是行不通的。
Sometimes the most important experiments are the ones that fail, because they teach us what doesn't work.
气候变化不仅是对农业的威胁，更是重塑农业的契机。
The true teacher defends his pupils against his own personal influence. He inspires self-distrust. He guides their eyes from himself to the spirit that quickens him. He will have no disciple.
