Arthashastra
प्रज्ञा शास्त्र चक्षुर् हि राजा अल्पेन अपि प्रयत्नेन मन्त्रम् आधातुं शक्तः परान् उत्साह प्रभाववतश् च साम आदिभिर् योग उपनिषद्भ्यां च अतिसंधातुम् ॥
he who has the eye of knowledge and is acquainted with the science of polity can with little effort make use of his skill for intrigue and can succeed by means of conciliation and other strategic means and by spies and chemical appliances in over-reaching even those kings who are possessed of enthusiasm and power.
english translation
prajJA zAstra cakSur hi rAjA alpena api prayatnena mantram AdhAtuM zaktaH parAn utsAha prabhAvavataz ca sAma Adibhir yoga upaniSadbhyAM ca atisaMdhAtum ॥
hk transliteration by Sanscript