"An anonymous referee for another journal severely criticized my inclusion of Say's Law as a key explanatory component of the macroeconomic problem as currently understood. He/she characterized Say's Law as a "worthless piece of economic dogma," adding that "the only way in which Say's Law has shaped the corpus of macro theory is by being comprehensively rejected by Keynes and everyone else to come since." Nevertheless, a modern-day disciple of Keynes recently conceded that "mainstream macroeconomics remains conflicted about the reintroduction of Say's Law" (Lance Taylor, in Epstein, p. 540), a statement that indirectly seems to concede that the New Classicals (Barro, Lucas, Sargent, etc.) have had an impact that is displeasing to those who, like the aforementioned anonymous referee, would prefer to throw Say's Law down George Orwell's knowledge-eradicating "memory hole" (from 1984)."
January 1, 1970
https://en.wikiquote.org/wiki/New_classical_macroeconomics