Shri Shankara Acharya’s Vakyavritti Verse 37
“So far the meanings of the words ’That’ and ’Thou’ have been explained. Now we proceed to deal with the meaning of the whole sentence, which consists in the absolute identity of the words ‘That’ and ‘Thou ‘.”
The final enlightenment of the individual spirit in its infinite, cosmic and divine aspect takes place when the Guru instructs the disciple, who by faith, devotion, discipline and service, is fully qualified for instruction, in the meaning of the great Vedic dictum “That Thou Art’.
In previous verses the holy Acharya has thrown a flood of light on the meanings of the terms ‘That’ and ‘Thou’ in the holy dictum.
Now he attempts to convey the meaning of the whole sentence ‘That Thou Art’.
Man has first to understand what is his own real Self (Atman).
The word ‘Atman’ means the inmost reality- in man, deeper than which nothing exists in the human personality.
It is the real spirit of man. It is the ‘Thou’ by which the Guru conveys the means of enlightenment.