And there's no need to repeat it for five days - I'm grateful for it every day.
Here ya go:
1) For this day in particular, September 17th, I'm grateful for the wisdom expressed in the words of our Constitution which define the making of laws and their limits, harnessing our best intentions and worst inclinations, towards securing the lives liberty, and ability of our people to pursue happiness.BTW WaPo, your ability to answer 13, or 1,300 trivia questions about the Constitution, is no indication of whether or not you understand it well enough to be grateful for it.
2) Grateful for the ability to reflect on what is valuable in life, and the liberty to make the decisions necessary to pursuing it.
3) Grateful that those who disagree with my choices are still not, quite, able to force me to live in accordance with theirs.
Try reading it, reading the arguments for, and against it, and considering what would happen if we should lose the last vestiges of it. Or if you're not quite up to that, one of the best tools I've ever found for considering and reflecting particular parts of the Constitution, is the site "The Founders Constitution". Scroll down on the contents page and you'll find it goes through the Constitution clause by clause, and each is supplied with a list of links to relevant portions of not only the Federalist Papers, but to documents which the Founders had in mind when writing the Constitution, what the Anti-Federalists objected to (this is particularly helpful in understanding the arguments For the Constitution which the Federalist Papers make), as well as early Supreme Court opinions and judgments relevant to that clause, and commentaries by early Supreme Court Justice Joseph Story (which are fantastic).
Constitution of the United States and the First Twelve Amendments 1787--1804
We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defence, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States of America.