Mahabharata 12.152.28
न भयं क्रोधचापल्यं न शोकस्तेषु विद्यतेन धर्मध्वजिनश्चैव न गुह्यं किंचिदास्थिताः
na bhayaṃ krodhacāpalyaṃ na śokasteṣu vidyatena dharmadhvajinaścaiva na guhyaṃ kiṃcidāsthitāḥ
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book