ChU 7.15.4
प्राणो ह्य् एवैतानि सर्वाणि भवति । स वा एष एवं पश्यन्न् एवं मन्वान एवं विजानन्न् अतिवादी भवति । तं चेद् ब्रूयुर् अतिवाद्य् असीति । अतिवाद्य् अस्मीति ब्रूयात् । नापह्नुवीत
prāṇo hy evaitāni sarvāṇi bhavati | sa vā eṣa evaṃ paśyann evaṃ manvāna evaṃ vijānann ativādī bhavati | taṃ ced brūyur ativādy asīti | ativādy asmīti brūyāt | nāpahnuvīta
Devanagari rendered by HREEM from the edition's roman (IAST) text; the IAST is the edition's own.
'Spirit then is all this. He who sees this, perceives this, and understands this, becomes an ativâdin. If people say to such a man, Thou art an ativâdin, he may say, I am an ativâdin; he need not deny it.'
Translated by F. Max Müller