And so, my fellow Americans: ask not what your country can do for you - ask what you can do for your country.
这是这篇演讲的完整篇
http://www.enread.com/speech/465.html
John F. Kennedy: Inaugural Address
delivered January 20, 1961
And so, my fellow Americans, ask not what your country can do for you; ask what you can do for your country.
My fellow citizens of the world, ask not what America will do for you, but what together we can do for the freedom of man.
Ask not what your country can do for you but what you can do for your country.