John Kennedy actually said...

With a good conscience our only sure reward, with history the final judge of our deeds, let us go forth to lead the land we love, asking His...

Let the word go forth from this time and place, to friend and foe alike, that the torch has been passed to a new generation of Americans.

Let every nation know, whether it wishes us well or ill, that we shall pay any price, bear any burden, meet any hardship, support any friend...

And so, my fellow Americans: ask not what your country can do for you--ask what you can do for your country.