"This is a merit of great important... especially in light of the state of our brothers in the Land of Israel. Through the merit of careful speech, may we become worthy of the redemption of Israel and the coming of the Moshaich Tzidkeinu, speedily..."

"Rav Mendel Kessin has accomplished great things with his wonderful lecture on care in speech. We give our approval and assistance to the distribute of this shiur among the Jewish people."
Rav Avrohom HaKohen Pam
Rav Yosef Sholom Elyashiv
Rav Aron Leib Shteinman
Rav Chaim Kanievsky
Rav Shmuel Auerbach
Rav Shmuel Kamenetsky
Rav Dovid Feinstein
Rav Yiroel Avrohom Portugal
Rav Mattisyahu Salomon

These words come from a historic Kol Koreh signed by ten Gedolei Yisroel. Within their carefully chosen words is a specific focus on the importance of one Shmiras Haloshon shiur - the powerful presentation that Rabbi Mendel Kessin has been delivering, with incredible results, for the past 15 years.
"May all those who assist the Tiferes Ramchal Institue receive Hashem's blessing and be worthy of a long and happy life, filled with wealth, bliss, honor, success and all that is good." - Rab Ovadia Yosef