“It is a favourite maxim of mine that history, while it should be scientific in its method, should pursue a practical object. That is, it should not merely gratify the reader's curiosity about the past, but modify his view of the present and his forecast of the future”

"Kafka and His Precursors" ["Kafka y sus precursores"], as translated in Labyrinths (1964)
Variant translation: The fact is that all writers create their precursors. Their work modifies our conception of the past, just as it is bound to modify the future.
Other Inquisitions (1952)
Context: In the critic's vocabulary, the word "precursor" is indispensable, but it should be cleansed of all connotations of polemic or rivalry. The fact is that every writer creates his own precursors. His work modifies our conception of the past, as it will modify the future.

Travis Parker, Chapter 22, p. 258-259
Source: 2000s, The Choice (2007)

Paul Monk, Australian Financial Review, cited in: Philip E. Tetlock. Expert Political Judgment: How Good Is It? How Can We Know?, 2015. Back cover.
About

1930s, Fireside Chat in the night before signing the Fair Labor Standards (1938)
Context: I certainly would not indicate a preference in a State primary merely because a candidate, otherwise liberal in outlook, had conscientiously differed with me on any single issue. I should be far more concerned about the general attitude of a candidate toward present day problems and his own inward desire to get practical needs attended to in a practical way. We all know that progress may be blocked by outspoken reactionaries and also by those who say "yes" to a progressive objective, but who always find some reason to oppose any specific proposal to gain that objective. I call that type of candidate a "yes, but" fellow.

Letter to John Taylor (February 27, 1818)
Letters (1817–1820)
Context: In Poetry I have a few axioms, and you will see how far I am from their centre. I think Poetry should surprise by a fine excess and not by singularity — it should strike the reader as a wording of his own highest thoughts, and appear almost a remembrance — Its touches of Beauty should never be halfway thereby making the reader breathless instead of content: the rise, the progress, the setting of imagery should like the Sun come natural to him — shine over him and set soberly although in magnificence leaving him in the luxury of twilight — but it is easier to think what Poetry should be than to write it — and this leads me on to another axiom. That if Poetry comes not as naturally as the leaves to a tree it had better not come at all.

Pt. 1, 7
Social Insurance and Allied Services (1942)
Context: Any proposals for the future, while they should use to the full the experience gathered in the past, should not be restricted by consideration of sectional interests established in the obtaining of that experience. Now, when the war is abolishing landmarks of every kind, is the opportunity for using experience in a clear field. A revolutionary moment in the world’s history is a time for revolutions, not for patching.

Speech, 1850
1850s

On the making of good films. Interview with the Associated Press (2004).

Abide as the Self