"I see absolutely no value to a judge of spending decades, years, months, weeks, day, hours, minutes, or seconds studying the Constitution, the history of its enactment, its amendments, and its implementation (across the centuries—well, just a little more than two centuries, and of course less for many of the amendments). Eighteenth-century guys, however smart, could not foresee the culture, technology, etc., of the 21st century. Which means that the original Constitution, the Bill of Rights, and the post-Civil War amendments (including the 14th), do not speak to today. David Strauss is right: The Supreme Court treats the Constitution like it is authorizing the court to create a common law of constitutional law, based on current concerns, not what those 18th-century guys were worrying about."
"In short, let's not let the dead bury the living."
Granted, he declared his beliefs decades after declaring the oath all judges must declare:
"I, Richard Posner, do solemnly swear (or affirm) that I will support and defend the Constitution of the United States against all enemies, foreign and domestic; that I will bear true faith and allegiance to the same; that I take this obligation freely, without any mental reservation or purpose of evasion; and that I will well and faithfully discharge the duties of the office on which I am about to enter. So help me God."
Maybe it had been so many years since he'd done it, he forgot what he was supposed to be doing.