Ramayana
अर्थानर्थान्तरे बुद्धिनिश्चितापि न शोभते । घातयन्ति हि कार्याणि दूताः पण्डितमानिनः ॥ ५-३०-३८
'Swinging from a course of action or an action leading to calamity is not proper. Messengers who assume that they are scholars (blinded by ego) destroy their mission. ॥ 5-30-38॥
english translation
arthAnarthAntare buddhinizcitApi na zobhate । ghAtayanti hi kAryANi dUtAH paNDitamAninaH ॥ 5-30-38
hk transliteration by Sanscript