Ribhu Gita

The Self alone is the spontaneous self effulgent Awareness; 
that alone is eternal bliss; 
that alone is Existence everlasting; that alone is all embracing perfection; the sole God-head without a rival and the sole primordial stuff of the Universe. 

In the conviction born of this experience, one should ever abide, as the sole I-AM, the Supreme Self.

Essence of Ribhu Gita Ch. 17, v. 29

Sri Sathya Sai Baba

He who is born cannot escape death, some time, somewhere. Every moment, many are born and many die. But man has to discover how to 'avoid' death. Now, the Atma which is the core of man, is not born; since it does not take birth, it does not meet death. Death happens to the body with which it is associated, with which it mixes. The delusion that the body is the core, that the body is real, that verily is the death. Affliction by that falsehood is the act of dying. To be free from that delusion is to attain Immortality. The body it is that disintegrates, not the Atma, the Soul, the Self. The body is undergoing change every moment and the final change is death, when the Self, changeless, remains. When one believes that the changing body is oneself and starts referring to it as 'I', that 'I' dies, but the real 'I' is deathless.

 As intense elevating activity and fearless inquiry into one's Truth are practised more and more, the consciousness that the 'body is oneself' can be overcome and negated. Consider the fruit of the tamarind tree. When unripe, it is not easy to separate the rind, the pulp and the seed. So too, those who have stuck to sensual desires and to fondling and feeding the body, cannot earn the awareness of the Atma. When the tamarind fruit becomes ripe, the rind can be broken off, the pulp gets detached from the seed and the seed can be isolated without effort. Inquiry and unselfish activity ripen the consciousness and the Atma can be isolated from the body, clear and pure.

(Sathya Sai Vahini, Ch 26)

Swami Krishnananda

"There is no death." Death is an extinction of what previously existed. Death of Consciousness is an impossibility, for Consciousness is presupposed by every mode of existence. What appears to be cast off is the layer of objectified consciousness or materialized thought, called the physical body. But even this removal of the physical sheath is only a state of the changing of individual consciousness. It is the shock felt by the individual at the loss of a sheath which was cherished with the belief that it is an eternal entity since long that makes it feel the apparent death of its existence. That aspect of the physical consciousness which feels its inability to fulfill certain orders of diverse desires in a particular state of existence changes its mode of consciousness into that of a different category which is suited to the fulfillment of its desires. This process of change is termed "death." Hence death is only a stage in spiritual evolution and not to be considered a dread spectre which is hard to be exorcised.

Moksha Gita - Commentary by Swami Krishnananda, Ch. 1