सर्पः क्रूरः खलः क्रूरः सर्पात्क्रूरतरः खलः ।
मन्त्रौषधवशः सर्पः खलः केन निवार्यते ॥

Meaning:
The serpent is cruel, a wicked man is cruel. But a wicked man is cruel more than a serpent. A serpent can be controlled by spells and medicines but by what can a wicked man be controlled?