The Upanishads, Part 1 (SBE01), by Max Müller, [1879], at sacred-texts.com

p. 123

TWENTY-THIRD KHANDA.

1. 'The Infinite (bhûman) 1 is bliss. There is no bliss in anything finite. Infinity only is bliss. This Infinity, however, we must desire to understand.'

'Sir, I desire to understand it.'