最舒服的一张椅子，是客人来访时我自己坐的那张。

你必须愿意去那些让你害怕的地方。

I dream that my son will grow up to be a good person, a free person. I dream that someday you will return to revisit the land of our childhood. I dream that flowers will bloom in the streets again...and kites will fly in the skies!

我不相信上帝，但我想念他。

I invent nothing, I rediscover.

The development of formal systems has revolutionized our understanding of mathematics.