Harav Yaakov Tzvi Blejer Nefesh Hachaim 084 – Shaar 4, 20 Mussar and HashkafaNefesh Hachaim https://shiurim.kzmnmb.org/wp-content/uploads/audio/shiurim/2021/07/Nefesh-Hachaim-084-Shaar-4-20.m4a