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

TWENTY-SECOND KHANDA.

1. 'When one obtains bliss (in oneself), then one performs duties. One who does not obtain bliss, does not perform duties. Only he who obtains bliss, performs duties. This bliss, however, we must desire to understand.'

'Sir, I desire to understand it.'