Jürg Niehans, " Revolution and evolution in economic theory https://ecompapers.biz.uwa.edu.au/paper/PDF%20of%20Discussion%20Papers/1992/92-20%20Niehans,%20J.pdf." The Australian Quarterly (1993): 498-515.
“Revolutions are the locomotives of history.”
Chapter 3, The Class Struggles in France, 1848 to 1850 https://www.marxists.org/archive/marx/works/1850/class-struggles-france/ch03.htm (1850)
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Karl Marx 290
German philosopher, economist, sociologist, journalist and … 1818–1883Related quotes

Message to Chairman Khrushchev Concerning the Meaning of Events in Cuba (18 April 1961).
1961

“We want to correct the paths of the revolution and history.”
Source: Kais Saied (2021) cited in " Tunisian president announces constitutional referendum in 2022 https://www.aljazeera.com/news/2021/12/13/tunisia-president-announces-referendum-and-elections" on Aljazeera, 13 December 2021.

Einstein's special theory of relativity, which explains the indeterminateness of the frame of space and time, crowns the work of Copernicus who first led us to give up our insistence on a geocentric outlook on nature; Einstein's general theory of relativity, which reveals the curvature or non-Euclidean geometry of space and time, carries forward the rudimentary thought of those earlier astronomers who first contemplated the possibility that their existence lay on something which was not flat. These earlier revolutions are still a source of perplexity in childhood, which we soon outgrow; and a time will come when Einstein's amazing revelations have likewise sunk into the commonplaces of educated thought.
The Theory of Relativity and its Influence on Scientific Thought (1922), p. 31-32

“A revolutionary moment in the world’s history is a time for revolutions, not for patching.”
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.

“Revolutions are the periods of history when individuals count most.”
McLeod, in Ch. 29
Barbary Shore (1951)

My Philosophy, p. 125 https://books.google.com/books?id=pC28TnExGEEC&pg=PA115
My Philosophy (1933)

Speech to the National Corporative Council (November 14, 1933), in A Primer of Italian Fascism, edited/translated by Jeffrey T. Schnapp (2000) p.163.
1930s

Source: The Limits of State Action (1792), Ch. 16