Chandogya Upanishad 7.7.1

7.7.1

vijñānaṃ vāva dhyānād bhūyaḥ \
vijñānena vā ṛgvedaṃ vijānāti yajurvedaṃ sāmavedam ātharvaṇaṃ caturtham itihāsapurāṇaṃ pañcamaṃ vedānāṃ vedaṃ pitryaṃ rāśiṃ daivaṃ nidhiṃ vākovākyam ekāyanaṃ devavidyāṃ brahmavidyāṃ bhūtavidyāṃ kṣatravidyāṃ nakṣatravidyāṃ sarpadevajanavidyāṃ divaṃ ca pṛthivīṃ ca vāyuṃ cākāśaṃ cāpaś ca tejaś ca devāṃś ca manuṣyāṃś ca paśūṃś ca vayāṃsi ca tṛṇavanaspatīñ chvāpadāny ākīṭapataṅgapipīlakam \
dharmaṃ cādharmaṃ ca satyaṃ cānṛtaṃ ca sādhu cāsādhu ca hṛdayajñaṃ cāhṛdayajñaṃ cānnaṃ ca rasaṃ cemaṃ ca lokam amuṃ ca vijñānenaiva vijānāti \
vijñānam upāssveti \\707.1\

1. ‘Understanding (_vijñāna_), assuredly, is more than Meditation. Verily, by Understanding one understands the Rig-Veda, the Yajur-Veda, the Sāma-Veda, the Atharva-Veda as the fourth, Legend and Ancient Lore (_itihāsa-purāṇa_) as the fifth, the Veda of the Vedas [i.e. Grammar], Rites for the Manes, Mathematics, Augury (_daiva_), Chronology, Logic, Polity, the Science of the Gods (_deva-vidyā_), the Science of Sacred Knowledge (_brahma-vidyā_), Demonology (_bhūta-vidyā_), Military Science (_kṣatra-vidyā_), Astrology (_nakṣatra-vidyā_), the Science of Snake-charming, and the Fine Arts (_sarpa-devajanavidyā), as well as heaven and earth, wind and space, water and heat, gods and men, beasts and birds, grass and trees, animals together with worms, flies, and ants, right and wrong, true and false, good and bad, pleasant and unpleasant, food and drink, this world and the yonder—all this one understands just with Understanding. Reverence Understanding.