Several of the chapters talk about the founders' intentions, how they explained they didn't have all the answers, and expected the Constitution to be amended as society progressed and evolved. This flies in the face of the originalists, who want to treat the Constitution as some kind of bible, as an inerrant document.
But it also raised some questions for me, upon reflection.
The whole thing is, at its heart, based on a fiction.
"Inalienable rights"? "Endowed by their creator"? "We hold these truths to be self-evident"?
Uh, no. There is no creator. There are no natural rights. There is nothing that gives any person any rights, at all. People have been doing terrible things to other people, sometimes whole classes of people, without any repercussions, for millennia. Some whole species (neaderthalis) have been completely wiped out.
For an equitable, fair and safe society there are rules of engagement, standards of behavior which make the society function without breaking down into sectarian or racial warfare. But these are entirely man-made rules or standards, nothing "inalienable" or "god-given" or "self-evident" about them.
Elevating these "good ideas" to some kind of universal truths is entirely an act of hopeful fiction.