Taittareeya Upanishad 33

This section describes the bliss of Brahman of which the worldly happiness is a mere reflection. Even the highest worldly happiness is produced by external factors and depends upon certain actions on the part of the enjoyer, from Brahma down to man. Beyond the highest worldly happiness lies the Bliss of Brahman, experienced by those who have realized their identity with the Supreme Spirit. The Bliss of Brahman does not admit of higher or lower degrees.