“It is now the moment when by common consent we pause to become conscious of our national life and to rejoice in it, to recall what our country has done for each of us, and to ask ourselves what we can do for the country in return.”

Remarks by el-Sisi during a military conference (28 April 2013) http://www.youtube.com/watch?v=LC93fn9s3-c.
2013

Shikantaza: Living Fully In Each Moment (page 4)
Not Always So, practicing the true spirit of Zen (2002)

2010s, Speech at the Republican National Convention (July 20, 2016)

"In the long history of the world, only a few generations have been granted the role of defending freedom in its hour of maximum danger. I do not shrink from this responsibility — I welcome it." is one of seven quotes inscribed on the walls at the gravesite of John F. Kennedy at Arlington National Cemetery.
"The energy, the faith, the devotion which we bring to this endeavor will light our country and all who serve it — and the glow from that fire can truly light the world." is one of seven quotes inscribed on the walls at the gravesite of John F. Kennedy at Arlington National Cemetery.
"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." is one of seven quotes inscribed on the walls at the gravesite of John F. Kennedy at Arlington National Cemetery.
It has been reported at various places on the internet that in JFK's Inaugural address, the famous line "Ask not what your country can do for you, ask what you can do for your country", was inspired by, or even a direct quotation of the famous and much esteemed writer and poet Khalil Gibran. Gibran in 1925 wrote in Arabic a line that has been translated as:
::Are you a politician asking what your country can do for you or a zealous one asking what you can do for your country?
::If you are the first, then you are a parasite; if the second, then you are an oasis in a desert.
However, this translation of Gibran is one that occurred over a decade after Kennedy's 1961 speech, appearing in A Third Treasury of Kahlil Gibran (1975) edited by Andrew Dib Sherfan, and the translator most likely drew upon Kennedy's famous words in expressing Gibran's prior ideas. For a further discussion regarding the quote see here.
1961, Inaugural Address
Context: In the long history of the world, only a few generations have been granted the role of defending freedom in its hour of maximum danger. I do not shrink from this responsibility — I welcome it. I do not believe that any of us would exchange places with any other people or any other generation. The energy, the faith, the devotion which we bring to this endeavor will light our country and all who serve it — and the glow from that fire can truly light the world.
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.

Original: (fr) L’important n’est pas ce qu’on fait de nous mais ce que nous faisons nous-même de ce qu’on a fait de nous.
Source: Saint Genet, Actor and Martyr (1952), p.55

2013, Commencement Address at Ohio State University (May 2013)
Context: That’s precisely what the founders left us: the power to adapt to changing times. They left us the keys to a system of self-government – the tool to do big and important things together that we could not possibly do alone. To stretch railroads and electricity and a highway system across a sprawling continent. To educate our people with a system of public schools and land grant colleges, including Ohio State. To care for the sick and the vulnerable, and provide a basic level of protection from falling into abject poverty in the wealthiest nation on Earth. To conquer fascism and disease; to visit the Moon and Mars; to gradually secure our God-given rights for all our citizens, regardless of who they are, what they look like, or who they love. 
We, the people, chose to do these things together. Because we know this country cannot accomplish great things if we pursue nothing greater than our own individual ambition. 
Still, you’ll hear voices that incessantly warn of government as nothing more than some separate, sinister entity that’s the root of all our problems, even as they do their best to gum up the works; or that tyranny always lurks just around the corner.  You should reject these voices. Because what they suggest is that our brave, creative, unique experiment in self-rule is just a sham with which we can’t be trusted.
We have never been a people who place all our faith in government to solve our problems, nor do we want it to. But we don’t think the government is the source of all our problems, either. Because we understand that this democracy is ours.  As citizens, we understand that America is not about what can be done for us. It’s about what can be done by us, together, through the hard and frustrating but absolutely necessary work of self-government. 
The founders trusted us with this awesome authority. We should trust ourselves with it, too. Because when we don’t, when we turn away and get discouraged and abdicate that authority, we grant our silent consent to someone who’ll gladly claim it.

Speech http://hansard.millbanksystems.com/commons/1979/mar/28/her-majestys-government-opposition-motion in the House of Commons (28 March 1979). Following the announcement that the government had lost by 1 vote, Callaghan declared his intention to call a general election
Prime Minister

In a debate in the Irish House of Commons on the vote of a grant which was recommended by Sir John Parnell, Chancellor of the Exchequer, as one not likely to be felt burdensome for many years to come, it was observed in reply that the House had no right to load posterity with a debt for what could in no degree operate to their advantage. This quotation was Sir Boyle's response.
[Barrington, Jonah, Personal sketches and recollections of his own times, Chapter XVII https://archive.org/details/personalsketche06barrgoog]