Well, it shares with the U.S. Constitution (and many other constitutions) the property of being intended to keep certain values fixed over time, I suppose. Is that what you meant? I don't consider that a terribly strong similarity, but, sure.
I find the US constitution remarkable in its sheer longevity, and how well-designed it was that it can still be used at this point in time. Compare and contrast with the French and Spanish consitutions throughout the XIXth and XXth centuries, which have been changing with every new regime. Sometimes with every new party. The Constitutions tended to be fairly detailed and restrictive, and not written with eternity in mind. I still used to prefer the latest versions of those because they tended to be explicitly Human Rights Compliant (TM), and found the Bill...
I have found this most wonderful (if fairly lengthy) article, and thought you would enjoy having it brought to your attention.
It is so good, I think we should include it among the references in the "Politics is the Mind Killer" wiki page. But, before that, I submit it to you, and ask you: is there anything in this article that would warrant its exclusion from this site? I mean, besides the fact that it is about politics, and written by a notorious Social-democrat (And is that in itself grounds for exclusion?).