Free from all desires

'Free from all desires, and knowing that He dwells in all living beings, that 'nothing exist in the world but I', when the state of fearlessness comes, it is then that the real Self appears in meditation.
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The innermost self is God himself

The innermost self is God himself and He who is God is also the Guru. There is not slightest difference between these three. 
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The attitude of ' you ' and ' me '

The attitude of ' you ' and ' me ' is this wall between the guru and his disciple. If it is not pulled down, the state of oneness between them is difficult to breach.
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From Shri Sai SatCharitra Chapter 19

Break and demolish completely the wall

Break and demolish completely the wall between the self and this.
Then we shall have a wide pathway to go to and fro, without fear.
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From Shri Sai SatCharitra Chapter 19

Unless man has turned away from wickedness and stopped from doing wrong, and has entirely composed himself, and unless his mind is at rest, he cannot gain self-realization even by means of knowledge.