First Distinction

"‘In the beginning,’ my dear, ‘there was that only which is, one only, without a second. Others say, in the beginning there was that only which is not, one only, without a second; and from that which is not, that which is was born.

‘But how could it be thus, my dear?’ the father continued. ‘How could that which is, be born of that which is not? No, my dear, only that which is, was in the beginning, one only, without a second.

‘It thought, may I be many, may I grow forth. It sent forth fire.

‘That fire thought, may I be many, may I grow forth. It sent forth water.

‘Water thought, may I be many, may I grow forth. It sent forth earth.’"

- Chāndogya Upaniṣad (8th to 6th century BCE)
Translated by trans. F. Max Müller, The Upanishads