Rav Nosson Ziv Finkel, the Alter of Slabodka

The cough of a talmud broke into a Mussar shmuse.  R’ Nosson Zvi immediately stopped speaking, and asked who had coughed.  When no one replied, he complained that no one cared about it, and asked in amazement, “If someone cries, do you also remain silent?”

From Sparks of Mussar by R Chaim Ephraim Zaitchik