Absolutely, and you can even go further. What is the constitution, or any constitution for that matter, without some kind of cultural norm that makes people adhere to it or value it in some way?

That's when we find ourselves at the very applicable thing of philosophy. It is one of the most powerful inventions human beings have, it has the potential to end wars, poverty, tyranny, you name it, and far too often people are told to think of it as a bunch of meaningless pontificating. You can learn a lot about a government by examining their attitude towards philosophy.