The relationship between wisdom and anger
Imam Ja'far Sadeq (as) says:
He who does not have his anger under his control does not have his wisdom under his control, either.
مَنْ لَمْ یَمْلِکْ غَضَبَهُ لَمْ یَملِکْ عَقْلَهُ.
Al-kafi, vol. 2, p. 303