We choose to go 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.”

(John F. Kennedy,  September 12, 1962) 

... and on July 21, 1969, the first man on the moon. 

Amazing ! still 50 years later !