Srimad-Bhagavatam: Canto 11 - Chapter 1 - Verse 49
Sanskrit:
देहं मनोमात्रमिमं गृहीत्वाममाहमित्यन्धधियो मनुष्या: ।एषोऽहमन्योऽयमिति भ्रमेणदुरन्तपारे तमसि भ्रमन्ति ॥ ४९ ॥
ITRANS:
dehaṁ mano-mātram imaṁ gṛhītvāmamāham ity andha-dhiyo manuṣyāḥeṣo ’ham anyo ’yam iti bhrameṇaduranta-pāre tamasi bhramanti
Translation:
Persons who identify with this body, which is simply the product of the material mind, are blinded in their intelligence, thinking in terms of “I” and “mine.” Because of their illusion of “this is I, but that is someone else,” they wander in endless darkness.