12/27/1977
https://www.presidency.ucsb.edu...
"Your service here brings you some rare opportunities."
"As a city of human freedom, human hope, and human rights, Berlin is a light to the whole world; a city on a hill—it cannot be hidden; the eyes of all people are upon you."
"I'm honored to join the citizens of this vital and dynamic city to declare again, whatever happens, Berlin will remain free."
"I hope that you will take advantage of this chance to get to know Germany and Europe in depth."