Lyndon Johnson actually said...
In 1958, when I presented this country's space proposals to the United Nations, I said then that we of America are determined that our quarrels and divisions here on this earth shall not be carried into this new and this very peaceful domain of space.
Context
Remarks at a Ceremony in the State Department Auditorium in Honor of the Gemini 4 Astronauts.
06/16/1965