"We are too fond of clapping ourselves upon the back because we live in modern times, and we preen ourselves quite ridiculously [and unnecessarily] on our modern progress. There is, of course, such a thing as modern progress, but it has been won at how great a cost. How many precious things have we flung from us to lighten ourselves for that race. And in some diiections (sic) we have progressed not at all. or we have progressed in a circle. Perhaps, indeed, all progress on this planet, and on every planet, is in a circle, just as every line you draw on a globe is a circle or part of one. Modern speculation is often a mere groping where ancient men saw clearly."
January 1, 1970
https://en.wikiquote.org/wiki/Progress