Shiva Purana
परिग्रहविनिर्मुक्तः पशुरित्यभिधीयते ॥ पशुभिः प्रेरितश्चापि पशुत्वं नातिवर्तते ॥ ४० ॥
He who is devoid of realisation is an animal. One urged by an animal cannot eschew his animal nature.
english translation
parigrahavinirmuktaH pazurityabhidhIyate ॥ pazubhiH preritazcApi pazutvaM nAtivartate ॥ 40 ॥
hk transliteration by Sanscript