“Each generation goes further than the generation preceding it because it stands on the shoulders of that generation. You will have opportunities beyond anything we've ever known.”

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

§5.4
Notation as a Tool of Thought (1979)

Picasso (1938)

Part 1.3 Rights of Man
1790s, Rights of Man, Part I (1791)
Context: There never did, there never will, and there never can, exist a Parliament, or any description of men, or any generation of men, in any country, possessed of the right or the power of binding and controlling posterity to the "end of time," or of commanding for ever how the world shall be governed, or who shall govern it; and therefore all such clauses, acts or declarations by which the makers of them attempt to do what they have neither the right nor the power to do, nor the power to execute, are in themselves null and void. Every age and generation must be as free to act for itself in all cases as the age and generations which preceded it. The vanity and presumption of governing beyond the grave is the most ridiculous and insolent of all tyrannies. Man has no property in man; neither has any generation a property in the generations which are to follow.

Source: Systematic Politics, 1943, p. 150-1 ; as cited in Albert Lepawsky (1949), Administration, p. 220-1

Mother Night (1961)

Source: The Black Obelisk

Introduction to "Cliff and the Calories," in Expanded Universe, (1980), pg. 355

Source: Something More, A Consideration of the Vast, Undeveloped Resources of Life (1920), p. 43
Context: The present generation believes that it knows more about Jesus Christ than any preceding generation knew. Yet we are equally confident that our grandchildren's children will understand Jesus far better than we do. There is something more in him than we have been able to fathom.