ŚVETĀŚVATARA UPANISHAD · 1.6

सर्वाजीवे सर्वसंस्थे बृहन्ते तस्मिन् हंसो भ्राम्यते ब्रह्मचक्रे ।
पृथग् आत्मानं प्रेरितारं च मत्वा जुष्टस् ततस् तेनामृतत्वम् एति ॥

sarvājīve sarvasaṃsthe bṛhante tasmin haṃso bhrāmyate brahmacakre ।
pṛthag ātmānaṃ preritāraṃ ca matvā juṣṭas tatas tenāmṛtatvam eti ॥

In that vast Brahma-wheel, in which all things live and rest, the bird flutters about, so long as he thinks that the self (in him) is different from the mover (the god, the lord). When he has been blessed by him, then he gains immortality.

F. Max Müller · The Upanishads, Sacred Books of the East 15 (1884)