Those of his fellows who belong to him here and those who are dead and whatever else there is which he wishes for and does not obtain-he finds all that by going in there (i.e. into his own Self). For there, indeed, lie those true desires of his, covered by what is false. As people who do not know the spot where a treasure of gold has been hidden somewhere in the earth, walk over it again and again without finding it, so all these creatures day after day go into the World of Brahman and yet do not find it, because they are carried away by untruth.
Sama Veda, Chandogya Upanishad VIII, III – The Serene Self and Satya Brahman, 2
That Self abides in the heart. The etymological explanation of heart is this: This one (ayam) is in the heart (hridi); therefore It is called the heart (hridayam). He who knows this goes every day in deep sleep to Heaven (i.e. Brahman, dwelling in the heart).
Sama Veda, Chandogya Upanishad VIII, III – The Serene Self and Satya Brahman, 3
Now, this serene being, after rising from this physical body and attaining the Highest Light, reaches his own true form. This is the Self. Thus he (i.e. the teacher, questioned by his pupils) spoke. Continuing, he said: This is the immortal, the fearless. This is Brahman. And of this Brahman the name is Satyam, the True.
Sama Veda, Chandogya Upanishad VIII, III – The Serene Self and Satya Brahman, 4
This name Satyam consists of three syllables: Sat, ti and yam. That which is Sat signifies the Immortal; and that which is ti is the mortal; and yam binds them both. Because this syllable binds both, therefore it is called yam. He who knows this goes every day in deep sleep to Heaven (i.e. Brahman, dwelling in the heart).
Sama Veda, Chandogya Upanishad VIII, III – The Serene Self and Satya Brahman, 5
The self is a dam, a separating boundary, for keeping these worlds apart. This dam is not passed by day and night, by old age, death and grief, or by good and evil deeds. All evils turn back from It, for the World of Brahman is free from all evil.
Sama Veda, Chandogya Upanishad VIII, IV – Brahman as a Dam, 1
