Superficially, Louis Michael Seidman would appear to agree with this understanding of a constitution, desiring to import it into his American context:
Countries like Britain and New Zealand have systems of parliamentary supremacy and no written constitution, but are held together by longstanding traditions, accepted modes of procedure and engaged citizens. We, too, could draw on these resources.
However, Seidman goes much further: Let’s Give Up on the Constitution. Why? Because it's been ignored numerous times in the past and, as an 18th-century document, it is no longer suited to the 21st-century United States.
What has preserved our political stability is not a poetic piece of parchment, but entrenched institutions and habits of thought and, most important, the sense that we are one nation and must work out our differences. No one can predict in detail what our system of government would look like if we freed ourselves from the shackles of constitutional obligation, and I harbor no illusions that any of this will happen soon. But even if we can’t kick our constitutional-law addiction, we can soften the habit.
Yet what if it turns out that the most central of these "entrenched institutions and habits of thought" is the respect that Americans hold for the very document he wishes to abandon? No one is asking Seidman or anyone else to believe that its origin is divine, but one would be foolish to give up on something as crucial as the general reverence for the rule of law, which can hardly be taken for granted in much of the world outside of the west. Seidman is, of course, welcome to work for changing the law, but it seems incomprehensible that a constitutional law professor would be so ready to relinquish, not just an old document, but that intangible and durable consensus undergirding its status — and indeed his own profession.