09/20/1989
https://www.presidency.ucsb.edu...
"It is true that international exchanges are not a great tide to sweep away all differences, but they will slowly wear away at the obstacles to peace as surely as water wears away a hard stone."
"Thank you very much, Dick, and distinguished Dr. Henry Kaufman."
"I'm grateful to you."
"Many of our foreign guests once worked and studied in the United States."