Lyndon Johnson actually said...
I am confident that the breakthrough in space will permit all mankind--in developed nations and emerging nations--to overcome and leave behind many obstacles that today retard human progress in health, that retard human progress in education, in agriculture, in the control of weather and man's environment, in industry and economic growth, and, above all, in understanding among nations.
Context
Remarks at the Presentation of NASA Exceptional Service Awards Following the Flight of Gemini 4.
06/16/1965