Still relevant today 48 years later...
"...I stand here tonight facing west on what was once the last frontier. From the lands that stretch three thousand miles behind us, the pioneers gave up their safety, their comfort and sometimes their lives to build our new West. They were not the captives of their own doubts, nor the prisoners of their own price tags. They were determined to make the new world strong and free -- an example to the world, to overcome its hazards and its hardships, to conquer the enemies that threatened from within and without.
Some would say that those struggles are all over, that all the horizons have been explored, that all the battles have been won, that there is no longer an American frontier. But I trust that no one in this assemblage would agree with that sentiment; for the problems are not all solved and the battles are not all won; and we stand today on the edge of a New Frontier... the frontier of unfilled hopes and unfilled threats...
The New Frontier is here whether we seek it or not.
Beyond that frontier are uncharted areas of science and space, unsolved problems of peace and war, unconquered problems of ignorance and prejudice, unanswered questions of poverty and surplus. It would be easier to shrink from that new frontier, to look to the safe mediocrity of the past, to be lulled by good intentions and high rhetoric...
That is the choice our nation must make -- a choice that lies between the public interest and private comfort, between national greatness and national decline, between the fresh air of progress and the stale, dank atmosphere of "normalcy," between dedication or mediocrity.
All mankind waits upon our decision. A whole world looks to see what we shall do. And we cannot fail that trust. And we cannot fail to try..."
--John F. Kennedy 1960
Spoken at the 1960 Democratic Convention in Los Angeles