However, as Rabbi Joseph Soloveitchik suggested in his eulogy for the Brisker Rov, the full, true "Brisk approach" as we know it today was not developed until Rabbi Chaim Soloveitchik had been rabbi of Brisk for many years. The notes that Rabbi Chaim Soloveitchik used for his lectures at the yeshiva of Volozhin (years before he assumed the Brisk pulpit) are still extant today, and the approach found there is not as well-developed as in (his and others') later published works. The notes could best be described as "proto-Brisk lomdus", a term which could be used regarding the works of the "Beis HaLevi" as well. Several modern scholars agree with this notion of "proto-Brisk", and it can be heard in the lectures of Rabbi Dr. Aaron Rakeffet-Rothkoff. Nonetheless, as seen above, even "proto-Brisk" was already different enough and popular enough to cause significant tension at the Volozhin yeshiva.