Thus spake Elon Musk on X (someone fetch plz)
Anyway, it's on the US Dollar Bill:
https://en.wikipedia.org/wiki/Novus_ordo_seclorum
"New order of the ages" from Virgil
The mottos were coined by Charles Thomson, the secretary of the Congress of the Confederation.[1][2] Thomson derived the phrase Novus ordo seclorum from a poem by the Roman poet Virgil. He wrote that the phrase signified "the beginning of the New American Era" as of the date of the Declaration of Independence in 1776, which was depicted in Roman numerals at the base of the pyramid on the seal.
So Why did Elon tweet that? Some more on the mythology and symbolism here
Because we just reclaimed our Sovereignty. A full reboot of America - thus a 'new founding'. Appropriate for the occasion.
https://qalerts.app/?n=2450
I read this decades ago, it is prob still one one of my many bookcases.
Novus Ordo Seclorum: The Intellectual Origins of the Constitution. by Forrest McDonald
https://scholarship.law.umn.edu/cgi/viewcontent.cgi?article=1827&context=concomm