हितोपदेश - मित्रलाभ - दुरात्मनः

न धर्मशास्त्रं पठतीति कारणं
    न चापि वेदाध्ययनं दुरात्मनः ।
स्वभाव एवात्र तथातिरिच्यते
    यथा प्रकृत्या मधुरं गवां पयः ॥

- हितोपदेश, मित्रलाभ

na dharmashAstram paThatIti kAraNam
    na chApi vedAdhyayanam durAtmanaH ।
svabhAva eva atra tathA atirichyate
    yathA prakRutyaa madhuraM gAvaM payaH ॥

- hitopadesha, mitralaabha

A rogue is rogue for ever. It doe not matter if he is studying the moral code of life, or the vedas. He will stay true to his innate nature. Just like it is natural for cow's milk to be sweet, it is natural for them to wicked.

- Hitopadesha, Mitralabha