The President's News Conference
09/12/1951
https://www.presidency.ucsb.edu...
That is the ideal situation sought by the Constitution of the United States, which in my opinion is the greatest document the Government has...
Well, officially, yes.
We are going to make atomic energy a weapon of peace.
It took us about 80 years to get a good start and to make it operate, and we are still trying to make it operate efficiently.