(...) To take the world as real and one's self as unreal is ignorance, the cause of sorrow. To know the self as the only reality and all else as temp… - Nisargadatta Maharaj

Your own self is your ultimate teacher (sadguru). The outer teacher (Guru) is merely a milestone. It is only your inner teacher, that will walk with you to the goal, for he is the goal.

I shall tell you how my Guru's Guru died. After announcing that his end was nearing, he stopped eating, without changing the routine of his daily life. On the eleventh day, at prayer time he was singing and clapping vigorously and suddenly died! Just like that, between two movements, like a blown out candle. Everybody dies as he lives. I am not afraid of death, because I am not afraid of life. I live a happy life and shall die a happy death. Misery is to be born, not to die. All depends how you look at it.

As he (the gnani) gets older he grows more and more happy and peaceful. After all, he is going home. Like a traveller nearing his destination and collecting his luggage, he leaves the train without regret. (…) The mist of bodily existence is lifting – the burden of the body is growing less from day to day. (…) Every sensation is contemplated in perfect equanimity. There is no desire for it, nor refusal. It is as it is and he looks at it with a smile of affectionate detachment. (…) He is alone, but he is all. He is not even a being. He is the beingness of all beings. (…).