07/18/1949
https://www.presidency.ucsb.edu...
"If the civilized world as we know it today is to survive, the gigantic power which man has acquired through atomic energy must be matched by spiritual strength of greater magnitude."
"The younger generation of today yearns for moral uplift."
"The United States expects to support that Charter."
"All mankind now stands in the doorway to destruction--or upon the threshold of the greatest age in history."