The assertion that "post-behaviouralism was a genuine revolution, not a reaction; a becoming, not a preservation; a reform, not a counter reformation" was made by David Easton.
David Easton, a significant figure in political science, used this definition to explain the nature and importance of the post-behavioural movement. He contrasted it with mere reactions or attempts to preserve existing ideas, highlighting its focus on progress and relevance.
This quote encapsulates Easton's perspective on post-behaviouralism as a necessary and progressive development in the study of politics.