Here are some things that Rabbonim said/wrote about R’ Kook zt”l:
R’ Isser Zalman Meltzer once said to R’ Chaim Ozer Grodzinski, “We are Gedolim – until we reach the doorknob of R’ Kook!” He also once said that he wished he could daven Neilah with the same kavanah that R’ Kook davened Mincha every day.
R’ Berel Soloveitchik once spoke against Zionism, and was asked, “What about R’ Kook?” He replied, “He is a Gadol!”
R’ Shabsai Rappaport said that he was once by his grandfather, R’ Moshe Feinstein zt”l, when R’ Moshe was writing a teshuva which argued on the Tzitz Eliezer. R’ Rappaport showed R’ Moshe something that R’ Kook had written on the subject, and R’ Moshe said he was not surprised, because R’ Kook “was a gaon of gaonmim!”
R’ Shlomo Zalman Auerbach zt”l said that when he used the term Maran, or Der Rav, it referred to R’ Kook zt”l. He asked R’ Kook to be the sandek at the bris of his son, R’ Shmuel. As R’ Hutner did, R’ Auerbach had a picture of R’ Kook hanging in his sukkah. Someone once published a book about R’ Yitzchak Elchonan Spektor which had some derogatory remarks about R’ Kook. R’ Auerbach assured buying the book until the comments were removed, and met personally with the author to encourage him to change it.
in 1923, at a conference of Rabbonim in Vienna, one Rav made derogatory remarks about R’ Kook. The Chofetz Chaim stood up and said, “You insulted the Mora D’Asra of Eretz Yisrael!” and left the conference. He refused to return. Before he left to return home, many people came to bid him farewell, including the group with the Rav who had made the comments. The Chofetz Chaim refused to speak with him, saying, “I will not say ‘Shalom’ to those who caused dispute with the Rav of Yerushalayim! He is holy and pure, and anyone who insults his kavod will not go unpunished!”
Joseph, it might do you some good to heed the words of the Chofetz Chaim zt”l!