ऋषयो राक्षसीमाहुर् वाचमुन्मत्तदृप्तयोः।
सा योनिः सर्ववैराणां सा हि लोकस्य निरृतिः॥
Sages call the speech of the mad and arrogant as demonic; such language is the source of all enmity and the ruin of the world.