I have not asked for a single program which did not cause one or all Americans some inconvenience, or some hardship, or some sacrifice. But they have… - John F. Kennedy

As the idealism of our youth has served world peace, so can it serve the domestic tranquility.

We choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard, because that goal will serve to organize and measure the best of our energies and skills, because that challenge is one that we are willing to accept, one we are unwilling to postpone, and one which we intend to win, and the others, too.

My fellow citizens: let no one doubt that this is a difficult and dangerous effort on which we have set out. No one can see precisely what course it will take or what costs or casualties will be incurred. Many months of sacrifice and self-discipline lie ahead--months in which our patience and our will will be tested--months in which many threats and denunciations will keep us aware of our dangers. But the greatest danger of all would be to do nothing.