If no one objects, I might add another bit of kindling to the dialog here.
Namely, I find it as interesting what the Founder's (of respective nations, etc.) chose to leave out of our foundational documents, what they chose to include.
For example, if you give the Constitution of one of the Western powers (say perhaps the former British Colony of the United States) a close reading, what you'll see is how closely the document reflects the issues of the day, articles that were no doubt foremost on the author's minds.
The United American States, as alluded above, had recently emerged from a military conflict with a European colonial power, one primarily over economic freedoms. The American Constitutional Document reflects this. Most of the language intended to structure the government emerged as an effort to prevent the development of a King, a British figure deeply resented by most recently liberated colonists. Most of the freedoms outlined in the Rights Bill were meant to enshrine freedoms that had been hotly contested in the Old Country.
Other liberties, perhaps liberties even equally important, were left out for no reason other than it probably didn't occur to the Founder's to include them, or they didn't want to muddy already occluded dialog with what must have seemed common-sense issues. For example, why do so few (if any?) constitutions mention an individuals right to own a dog? I'd conjecture it is because it hadn't occurred to the Founders that anyone might want to limit this sort of freedom. Dog ownership hadn't seemed worth mentioning.
Now, unfortunately we are left to conjecture what our ancestors would have intended had the issue of dog ownership been put to close scrutiny. Or perhaps more pressingly, homosexual marriage, flag burning, pregnancy abortion, automatic weapon proliferation, internet freedom, online gambling, cannibus smoking or school-based worship.
Did George Washington even own a dog? I'll admit that I don't know. We're left to put words in the mouths of the Founder's that suit our individual purposes, especially on issues where they offered little in the way of advice.