The king should never neglect to look after his own weak points as also after those of his foes. He should act in such a way that his enemies may not be able to discover his weak points, and he should himself assail them when theirs are seen.
अप्रमत्तो भवेद् राजा छिद्रदर्शी परात्मनोः। नास्यच्छिद्रं परः पश्येच्छिद्रेषु परमन्वियात्॥