种下一棵树，就是种下一个希望。
He who plants a tree plants a hope.
科学是一项集体事业，每一代人都为之添砖加瓦。
沉默可以成为一件作品中最响亮的元素。
The question I ask myself like almost every day is, 'Am I doing the most important thing I could be doing?'
