Vayoel Moshe a Treatise about Eretz Yisroel on wikipedia says this, “3. Maamar Leshon HaKodesh (Treatise about the holy tongue), in which Teitelbaum writes that not only is there no reason to choose to speak Modern Hebrew – it is actually forbidden. This was written as a personal answer to the chief rabbi of Montreal at the time, Rabbi Pinchas Hirschsprung, and it was later added into this book.” Just so you know, “FORBIDDEN” means, “FORBIDDEN”. You are testing H”M. Stop it. signed, RDD Teitelbaum
