Katha Upanishad
parāñci khāni vyatṛṇat svayaṃbhūs tasmāt parāṅ paśyati nāntarātman kaścid dhīraḥ pratyag ātmānam aikṣad āvṛttacakṣur amṛtatvam icchan
Death said: "The Self-existent pierced the openings (of the senses) so that they turn forward; therefore man looks forward, not backward into himself. Some wise man, however, with his eyes closed and wishing for immortality, saw the Self behind.
parācaḥ kāmān anuyanti bālās te mṛtyor yanti vitatasya pāśam atha dhīrā amṛtatvaṃ viditvā dhruvam adhruveṣv iha na prārthayante
Children follow after outward pleasures, and fall into the snare of wide-spread death. Wise men only, knowing the nature of what is immortal, do not look for anything stable here among things unstable.
yena rūpaṃ rasaṃ gandhaṃ śabdān sparśāṃśca maithunān etenaiva vijānāti kim atra pariśiṣyate etad vai tat
That by which we know form, taste, smell, sounds, and loving touches, by that also we know what exists besides. This is that (which thou hast asked for).
svapnāntaṃ jāgaritāntaṃ cobhau yenānupaśyati mahāntaṃ vibhum ātmānaṃ matvā dhīro na śocati
The wise, when he knows that that by which he perceives all objects in sleep or in waking is the great omnipresent Self, grieves no more.
ya imaṃ madhvadaṃ veda ātmānaṃ jīvam antikāt īśānaṃ bhūtabhavyasya na tato vijugupsate etad vai tat
He who knows this living soul, which eats honey (perceives objects) as being the Self, always near, the Lord of the past and the future, henceforward fears no more. This is that.
yaḥ pūrvaṃ tapaso jātam adbhyaḥ pūrvam ajāyata guhāṃ praviśya tiṣṭhantaṃ yo bhūtebhir vyapaśyata etad vai tat
He who (knows) him who was born first from the brooding heat (for he was born before the water), who, entering into the heart, abides therein, and was perceived from the elements. This is that.
yā prāṇena sambhavati aditir devatāmayī guhāṃ praviśya tiṣṭhantīṃ yā bhūtebhir vyajāyata etad vai tat
(He who knows) Aditi also, who is one with all deities, who arises with Prâna (breath or Hiranyagarbha), who, entering into the heart, abides therein, and was born from the elements. This is that.
araṇyor nihito jātavedā garbha iva subhṛto garbhiṇībhiḥ dive diva īḍyo jāgṛvadbhir haviṣmadbhir manuṣyebhir agniḥ etad vai tat
There is Agni (fire), the all-seeing, hidden in the two fire-sticks, well-guarded like a child (in the womb) by the mother, day after day to be adored by men when they awake and bring oblations. This is that.
yataś codeti sūryo astaṃ yatra ca gacchati taṃ devāḥ sarve arpitās tad u nātyeti kaścana etad vai tat
And that whence the sun rises, and whither it goes to set, there all the Devas are contained, and no one goes beyond. This is that.
yad eveha tad amutra yad amutra tad anv iha mṛtyoḥ sa mṛtyum āpnoti ya iha nāneva paśyati
What is here (visible in the world), the same is there (invisible in Brahman); and what is there, the same is here. He who sees any difference here (between Brahman and the world), goes from death to death.
manasaivedam āptavyaṃ neha nānāsti kiṃcana mṛtyoḥ sa mṛtyuṃ gacchati ya iha nāneva paśyati
Even by the mind this (Brahman) is to be obtained, and then there is no difference whatsoever. He goes from death to death who sees any difference here.
aṅguṣṭhamātraḥ puruṣo madhya ātmani tiṣṭhati īśāno bhūtabhavyasya na tato vijugupsate etad vai tat
The person (purusha), of the size of a thumb, stands in the middle of the Self (body ?), as lord of the past and the future, and henceforward fears no more. This is that.
aṅguṣṭhamātraḥ puruṣo jyotir iva adhūmakaḥ īśāno bhūtabhavyasya sa evādya sa u śvaḥ etad vai tat
That person, of the size of a thumb, is like a light without smoke, lord of the past and the future, he is the same to-day and to-morrow. This is that.
yathodakaṃ durge vṛṣṭaṃ parvateṣu vidhāvati evaṃ dharmān pṛthak paśyaṃs tān evānu vidhāvati
As rain-water that has fallen on a mountain-ridge runs down the rocks on all sides, thus does he, who sees a difference between qualities, run after them on all sides.
yathodakaṃ śuddhe śuddham āsiktaṃ tādṛg eva bhavati evaṃ muner vijānata ātmā bhavati gautama
As pure water poured into pure water remains the same, thus, O Gautama, is the Self of a thinker who knows."