On November 27, 1963 Lyndon Johnson addressed a Joint Session of Congress and the American public only a few days after the assassination of John F. Kennedy.
It’s a pretty amazing speech, that starts as good as any I know:
All I have I would have given gladly not to be standing here today.
LBJ goes on to set up his vision of his presidency, deftly using JFK’s memory to lay out his own goals.
Check out the full text.