The opportunity finally came in 1974, but the decision was not an easy one: "I was not sure then which would eventually contribute more to the country: to use my academic base in the United States, or to return right away and put my knowledge to practice.
在國外待久了，下決心回國是不太容易的。我想對我而言，最大的抉擇在於，是要以海外學術地位做基礎來報效國家，還是回到國內長期服務？