नीतिसार - बलाढ्यः

विषं विषेण व्यथते वज्रं वज्रेण भिद्यते ।
गजेन्द्रो दृष्टसारेण गजेन्द्रेणैव बध्यते ॥

- नीतिसार

viSham viSheNa vyathate vajram vajreNa bhidyate ।
gajendro dRuShTasAreNa gajendreNa eva badhyate ॥

- neetisAra

Poison can be neutralised by another kind of poison. Diamond can be cut only by diamond. Only a stronger elephant can catch an elephant. Such is the nature of innate character.

- Neetisara