03/22/1975
https://www.presidency.ucsb.edu...
"We should be proud of this two centuries of effort and accomplishment."
"Freedom was nourished in American soil because the principles of the Declaration of Independence flourished in our land."
"Nothing, then, is unchangeable but the inherent and inalienable rights of man."
"You have given to the rest of America the guidance and the inspiration to make our Bicentennial what it ought to be."