Education is the most powerful weapon which you can use to change the world.

新的大国的崛起总是引起现有大国的担忧，因为它威胁到现有的权力平衡。

经验不过是人们给自己的错误起的名字。

Drawing is honesty. There is no possibility of cheating. It is either good or bad.

The inflationary universe model suggests that the universe expanded exponentially in the first fraction of a second after the Big Bang.