04/23/1947
https://www.presidency.ucsb.edu...
"I accept your resignation effective at the close of business on March thirty-first."
"As a member of the National Security Council your competent service has been a major contribution to the successful operation of that organization."
"You discharged all these duties well and faithfully."
"There never was a time in the history of the world when we needed scientists and people of energy as we need them now."