When I say "thousands of years", I mean that quite literally. #Mengzi demonstrated understanding of this in the 5th Century BCE. So did #Aristotle in the 3rd Century BCE. So did #ThomasPaine in the 18th Century CE. So did James #Bronterre O'Brien and #HenryGeorge in the 19th Century CE. So did #JohnSherwinCrosby in the 20th Century CE. So must we in the 21st Century CE. #philosophy #history