Everything passes. Both soaring joys and crushing sorrows fade away like a dream. However, the knowledge of having lived one’s life to the fullest never disappears.
Nichiren wrote that wrath can be either good or bad. Self-centered anger generates evil, but wrath at social injustice becomes the driving force for reform. Strong language that censures and combats a great evil often awakens adverse reactions from society, but this must not intimidate those who believe they are right. A lion is a lion because he roars.