Arthashastra
"सत् पुरुष आचारः कोपो वैर यातनम् अवज्ञा वधो भीत मनुष्यता च ॥
anger is the characteristic of a righteous man. It is the foundation of bravery; it puts an end to despicable (persons); and it keeps the people under fear.
english translation
"sat puruSa AcAraH kopo vaira yAtanam avajJA vadho bhIta manuSyatA ca ॥
hk transliteration by Sanscript