पञ्चतंत्र - मित्रभेद - विद्वेषः

न चन्द्रेण न औषध्या न सूर्येण न वह्निना |
साम्नैव विलयं याति विद्वेष्रभवं तमः ||

-पञ्चतंत्र, मित्रभेद

The darkness caused by hatred can not be overcome by moon (moonlight), nor by the sun, also not by any fire. It can only be dealt with by pacifying patiently.

- Panchatantra, Mitrabhedha