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In one of his many talks to youth, Krishnamurti exalts us not to fear this same flow of life, not to seek permanence where none exists. Paraphrasing him, he says that seeking permanence means desiring the pleasure of indefinite continuity and having everything that
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Only the mind without walls, without established position, without barriers, without resting places, that freely moves with life, beyond time, pushing and exploring, only this mind can be happy, eternally new because it is in itself creative.
This brings us back to the First Mystery of Life as Murchie corroborates with Krishnamurti by establishing that "an independent 'I' bounded by life and death is an absurdity..."
"...we are in the same hard-to-visualize field Einstein explored when working out his relativity theory along with its contingent concept that every individual's personal orbit through life is representable as a 'world line' framed in the common four-dimensional crystalline coordinates of space-time. And in case you didn't notice it, a prime philosophical deduction from world lines is that, if relativity be true, an independent 'I' bounded by birth and death is an absurdity, since ... the field concept now so well established as a foundation for relativity implies continuums in virtually everything, including space-time and most certainly its best-known derivative: life. In my view, furthermore, the key to comprehending space-time is the obvious (to me) fact that space is the relationship between things and other things while time is the relationship between things and themselves. The time relation thus requires some establishment of identity (between things and themselves) seeing as identity is indispensable in temporal continuity. But if identity is of the essence of time, it follows that when a human being gives himself to a cause, letting his identity be absorbed in something larger than himself, he is proportionately liberating himself from the field of time. Which tells us something about the relation between mortality and immortality and between life and death, for it presumes that, as one's self is swallowed by universality, to a comparable degree one becomes immortal."
So, it seems prudent to ask at this point, do only certain causes qualify as immortality generators? I can only guess that any cause that seeks permanence would not. However, I'd like to differentiate between seeking meaning, perhaps the most fundamental human impulse, and seeking permanence. Finding meaning or purpose in something sticks us in the middle of the raging river of life and frees us from the clutching, limited mind, only if this meaning does not need to be held up or justified by any of the barriers mentioned by Krishnamurti. True meaning opens us to further learning, is inclusive and universal, builds unity and justice and above all implies attitudinal and behavioral change as it leads us closer to living a life with fuller purpose. In this sense, meaning is life, which is what the 'I' not bounded by life or death seeks fervently.
Thus, giving oneself to a worthy cause, to meaning, through a circle of action-reflection, transcends the "I" over time, gently sets one in the torrent of life, and permits the seeker to comprehend both the abstract nature of body and soul and their mystical, impermanent fusion. The following quote from 'Abdu'l-Baha, explained brilliantly in the video below, perfectly captures the spirit of this conclusion:
"Meditation is the key for opening the doors of mysteries. In that state man abstracts himself: in that state man withdraws himself from all outside objects; in that subjective mood he is immersed in the ocean of spiritual life and can unfold the secrets of things-in-themselves."
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Guy Murchie - The Seven Mysteries of Life
Krishnamurti - The River of Life
'Abdu'l-Baha - Paris Talks