By the direct evidence of the senses, by conjecture, by comparisons, and by the injunctions of the scriptures, O monarch, the king should study friends and enemies.
प्रत्यक्षेणानुमानेन तथौपम्यागमैरपि। परीक्ष्यास्ते महाराज स्वे परे चैव नित्यशः॥