种一棵树最好的时间是20年前，其次是现在。

我是一个永远解决不了的问题。

科学是一项协作的努力。没有人能独自做出发现。

The artist must be a servant of the absolute.

谈论社区的利益而不了解个人的利益是徒劳的。

The best way to untangle a knotty tangle is not to “untie” the knots， but to keep pulling the loops apart wider and wider. Just make the mess as big， loose and open as possible. As you open up the knots they will unravel themselves. Works on cords， strings， hoses， yarns， or electronic cables.