“Genius may stand on the shoulders of giants, but it stands alone.”

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)

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

Abelson attributes this thought to his Princeton roommate Jeff Goll
Source: Public Knowledge - Hal Abelson http://www.publicknowledge.org/about/who/board/abelson; also quoted in Vortex dynamics in thin films of amorphous Mo77Ge23, 1998, p. 6

Source: On the Edge

1910s, Address to the Knights of Columbus (1915)
Context: All of us, no matter from what land our parents came, no matter in what way we may severally worship our Creator, must stand shoulder to shoulder in a united America for the elimination of race and religious prejudice. We must stand for a reign of equal justice to both big and small. We must insist on the maintenance of the American standard of living. We must stand for an adequate national control which shall secure a better training of our young men in time of peace, both for the work of peace and for the work of war. We must direct every national resource, material and spiritual, to the task not of shirking difficulties, but of training our people to overcome difficulties. Our aim must be, not to make life easy and soft, not to soften soul and body, but to fit us in virile fashion to do a great work for all mankind. This great work can only be done by a mighty democracy, with these qualities of soul, guided by those qualities of mind, which will both make it refuse to do injustice to any other nation, and also enable it to hold its own against aggression by any other nation. In our relations with the outside world, we must abhor wrongdoing, and disdain to commit it, and we must no less disdain the baseness of spirit which lamely submits to wrongdoing. Finally and most important of all, we must strive for the establishment within our own borders of that stern and lofty standard of personal and public neutrality which shall guarantee to each man his rights, and which shall insist in return upon the full performance by each man of his duties both to his neighbor and to the great nation whose flag must symbolize in the future as it has symbolized in the past the highest hopes of all mankind.

This source is disputed as it does not cite an original document for the quote. The correct author is Suzy Kassem.
Disputed

Source: House of Leaves

The Observer (15 December 1991).

Source: The Heart is a Lonely Hunter