brain sharper than the arrow.

एकम् हन्यान्नवा हन्यादिषुर्मुक्तो धनुष्मता।
बुद्धिर्बुद्धिमतोत्सृष्टः राष्ट्रं हन्ति सनायकं॥
चाणक्य
ekam hanyānnavā hanyādiṣurmukto dhanuṣmatā|
buddhirbuddhimatotsṛṣṭaḥ rāṣtraṁ hanti sanāyakaṁ||
cāṇakya

It is possible that even an arrow shot by the most efficient marksman may miss its target and may fail to kill. 
  But the sparks of intelligence emitted  by  the highly learned and efficient people, 
if they are oriented against a nation and the king,  
would, without fail, cause the destruction of the whole kingdom with its leader .

The arrow here represents the brute force.. which may fizzle out at the target, 
but an intellectual giant will never miss his mark.  
This statement is attributed to Chanakya 
and the master himself was  a living testimony for this point of view.  
Without wielding any weapons he dethroned the Nanadas 
and established the Maurya dyanasty.

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