CHĀNDOGYA UPANISHAD · 7.16.1

एष तु वा अतिवदति यः सत्येनातिवदति ।
सो ऽहं भगवः सत्येनातिवदतीति ।
सत्यं त्व् एव विजिज्ञासितव्यम् इति ।
सत्यं भगवो जिजिज्ञास इति ॥

eṣa tu vā ativadati yaḥ satyenātivadati ।
so ’haṃ bhagavaḥ satyenātivadatīti ।
satyaṃ tv eva vijijñāsitavyam iti ।
satyaṃ bhagavo jijijñāsa iti ॥

'But in reality he is an ativâdin who declares the Highest Being to be the True (Satya, τὸ ὄντως ὄν).' 'Sir, may I become an ativâdin by the True?' 'But we must desire to know the True.' 'Sir, I desire to know the True.'

F. Max Müller · The Upanishads, Sacred Books of the East 1 (1879)