“Bernard of Chartres used to say that we were like dwarfs seated on the shoulders of giants. If we see more and further than they, it is not due to our own clear eyes or tall bodies, but because we are raised on high and upborne by their gigantic bigness.”

The Friend; A Series of Essays (1812), No. 15 (30 November 1809), p. 228
Cf. Isaac Newton, letter to Robert Hooke (15 February 1676): "If I have seen further it is only by standing on the shoulders of giants".

Jacula Prudentum (1651)

Stated http://www.fas.org/news/iraq/1998/02/19/98021907_tpo.html on NBC's Today Show (February 19, 1998)
1990s

Letter to Robert Hooke (15 February 1676) [dated as 5 February 1675 using the Julian calendar with March 25th rather than January 1st as New Years Day, equivalent to 15 February 1676 by Gregorian reckonings.] A facsimile of the original is online at The digital Library https://digitallibrary.hsp.org/index.php/Detail/objects/9792. The quotation is 7-8 lines up from the bottom of the first page. The phrase is most famous as an expression of Newton's but he was using a metaphor which in its earliest known form was attributed to Bernard of Chartres by John of Salisbury: Bernard of Chartres used to say that we [the Moderns] are like dwarves perched on the shoulders of giants [the Ancients], and thus we are able to see more and farther than the latter. And this is not at all because of the acuteness of our sight or the stature of our body, but because we are carried aloft and elevated by the magnitude of the giants. Modernized variants: If I have seen further it is by standing on the shoulders of giants. If I have seen further it is only by standing on the shoulders of giants.
Variant: If I have seen further it is by standing on ye sholders of Giants.
Source: The Correspondence Of Isaac Newton

#181
Vectors: Aphorisms and Ten Second Essays (2001)

2010s, 2018, The Restless Wave (2018)
Context: !-- I want to talk to my fellow Americans a little more, if I may: --> My fellow Americans. No association ever mattered more to me. We’re not always right. We’re impetuous and impatient, and rush into things without knowing what we’re really doing. We argue over little differences endlessly, and exaggerate them into lasting breaches. We can be selfish, and quick sometimes to shift the blame for our mistakes to others. But our country ‘tis of thee.‘ What great good we’ve done in the world, so much more good than harm. We served ourselves, of course, but we helped make others free, safe and prosperous because we weren’t threatened by other people’s liberty and success. We need each other. We need friends in the world, and they need us. The bell tolls for us, my friends, Humanity counts on us, and we ought to take measured pride in that. We have not been an island. We were ‘involved in mankind.‘
Before I leave, I’d like to see our politics begin to return to the purposes and practices that distinguish our history from the history of other nations. I would like to see us recover our sense that we are more alike than different. We are citizens of a republic made of shared ideals forged in a new world to replace the tribal enmities that tormented the old one. Even in times of political turmoil such as these, we share that awesome heritage and the responsibility to embrace it. Whether we think each other right or wrong in our views on the issues of the day, we owe each other our respect, as long as our character merits respect, and as long as we share, for all our differences, for all the rancorous debates that enliven and sometimes demean our politics, a mutual devotion to the ideals our nation was conceived to uphold, that all are created equal, and liberty and equal justice are the natural rights of all. Those rights inhabit the human heart, and from there, though they may be assailed, they can never be wrenched. I want to urge Americans, for as long as I can, to remember that this shared devotion to human rights is our truest heritage and our most important loyalty.

Source: Why We Love Dogs, Eat Pigs, and Wear Cows (2010), p. 113

This evokes the statement by Newton: "If I have seen further, it is by standing on the shoulders of giants."
Vorkosigan Saga, The Vor Game (1990)