Karl Popper:
The myth of the framework can be stated in one sentence, as follows.
A rational and fruitful discussion is impossible unless the participants share a common framework of basic assumptions or, at least, unless they have agreed on such a framework for the purpose of discussion.
...
In the formulation I gave of the myth, it is a fruitful discussion which is declared impossible. Against this I shall defend the directly opposite thesis: that a discussion between people who share many views is unlikely to be fruitful, even though it may be pleasant; while a discussion between vastly different frameworks can be extremely fruitful, even though it may sometimes be extremely difficult, and perhaps not quite so pleasant (though we may learn to enjoy it).
— "The Myth of the Framework" (1965, 1974), in M. A. Notturno, ed., The Myth of the Framework: In defence of science and rationality (London and New York: Routledge, 1994), pp. 33-65; quotation from pp. 34-5.