我不是为了钱或名声而打球，我打球是因为我爱网球。
I don’t play for the money or the fame. I play because I love tennis.
2004年9月13日，81岁的杨振宁在清华大学开始为本科生讲授普通物理。他说
Why was I born with such contemporaries
A journey is a person in itself; no two are alike. And all plans, safeguards, policing, and coercion are fruitless. We find after years of struggle that we do not take a trip; a trip takes us.
数学的美在于它如此简单却又如此强大。