Many good-faith misunderstandings within these debates can be traced to an ambiguity in the term “liberalism.” It refers, on the one hand, to a set of political practices, and on the other hand, to a political theory that purports to explain those practices. Defenders of liberalism are thinking first and foremost about liberal political practice, which they (almost all) defend by drawing selectively on liberal theory. Critics of liberalism are thinking first and foremost about liberal political theory, which they (almost all) attack by pointing selectively to liberal practice.
These attacks and these defenses [of liberalism] share a common error. Both accept liberal theory’s false claim to be the authoritative interpreter of liberal practice. The critics of liberalism are right to see liberal theory as fatally flawed: It cannot explain the workings of any real human society. But precisely because it is so flawed, liberal theory also cannot explain the weaknesses of our own liberal societies.
If we are to have a productive conversation about the strengths and weaknesses of contemporary liberal politics, a crucial first step will be learning to talk about liberal practice without relying on liberal theory…
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