KeU 2.2
नाहं मन्ये सुवेदेति नो न वेदेति वेद च । यो नस्तद्वेद तद्वेद नो न वेदेति वेद च
The disciple said: I do not think I know It well, nor do I think that I do not know It. He among us who knows It truly, knows (what is meant by) "I know" and also what is meant by "I know It not."
Translated by Swami Paramananda
The Pupil says: 'I do not think I know it well, nor do I know that I do not know it. He among us who knows this, he knows it, nor does he know that he does not know it.
Translated by F. Max Müller