Open cooperation is an important path for technological progress.

The great challenge of our time is to create a world order that is both just and sustainable.

教师的爱是滴滴甘露，即使枯萎的心灵也能苏醒；教师的爱是融融春风，即使冰冻了的感情也会消融。

The only way to deal with temptation is to yield to it.

The office of President is great, but the man who holds it is not.

有时帮助穷人的最好方式是给他们现金，让他们自己决定如何使用它。