The Upanishads, Part 1 (SBE01), by Max Müller, , at sacred-texts.com
1. 'But in reality he is an ativâdin who declares the Highest Being to be the True (Satya, τὸ ὄντως ὄν).'
'Sir, may I become an ativâdin by the True?'
'But we must desire to know the True.'
'Sir, I desire to know the True.'