“Rav Soloveitchik used to give shiurim on the West Side for baalei batim in Moriah [shul - one of the founders of this shul was my grandfather a"h E.E.] . One night on the way home in the car, I said something to him, and he said, ‘Shhh. The Lubavitcher Rebbe is speaking. I want to hear what he has to say.’” The Rebbe’s speech was being broadcast on the radio. “When we dropped him off at his apartment, he said, ‘I sat and listened, but I couldn’t understand anything.’
Then, after he went to the famous farbrengen, where the Rebbe stood up for him and everything else, he said, ‘Du zitzt a Yid, and he quotes Gemaras, Rashi, Tosafos, the Zohar, everything without looking inside. Ven ich darf reden finef minut (when I have to speak for five minutes), I write for myself lots of notes. But here Torah is flowing out of the Rebbe like water, un ales shtimt (and it all fits).’ “Rav Soloveitchik used to tell me, ‘I know the Lubavitcher Rebbe from Berlin. I can testify that he didn’t miss even one day of going to the mikvah.’ And then the Rebbe sent him a message asking him to come to the celebration for his 30 years of being Rebbe, and he went.”