Lyndon Johnson actually said...

So, on this occasion today here in the Cabinet Room, we are marking the 15th year of the award of the Young American Medals.

And I would express the hope that all nations may become willing to join in such great enterprises for the good of mankind.

This is, first of all, a very tangible and valuable realization of the promise and potential of man's exploration of space.

By virtue of the authority vested in me by Section 301 of Title 3 of the United States Code, and as President of the United States, it is he...