People change and forget to tell each other.

Disciplining yourself to do what you know is right and important, although difficult, is the highroad to pride, self-esteem, and personal satisfaction.

No matter what happens in life, be good to people. Being good to people is a wonderful legacy to leave behind.

1983年12月，杨振宁向邓小平建议

释义：贫穷和低贱本身并不是耻辱，而通过谄媚、乞求他人来获取利益才是真正的耻辱。