Quality should never be compromised for short-term gains.

Three things you need: The ability to not give up something till it works， the ability to give up something that does not work， and the trust in other people to help you distinguish between the two.

The real competition is not between companies, but between different visions of the future.

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