Ramayana
यथा दृष्टिः शरीरस्य नित्यमेव प्रवर्तते । तथा नरेन्द्रो राष्ट्रस्य प्रभवस्सत्यधर्मयोः ॥ २-६७-३३
The king is the source for protecting the truth and morality of a country like the eye which perpetually watches the welfare of the body. ॥ 2-67-33॥
english translation
yathA dRSTiH zarIrasya nityameva pravartate । tathA narendro rASTrasya prabhavassatyadharmayoH ॥ 2-67-33
hk transliteration by Sanscript