That paragraph spoken by Michio Kaku, the famous physicist, may well
explain why we keep coming back to gross material existence and cannot
seem to get it about staying permanently at least in the subtle
material existence.
Religion, regardless of whether it be from the East or West, from
Christianity, Islam or the various sects of Hinduism and spirituality
from there and there on this planet, is so much fantasy about going to
a spiritual world abruptly after leaving this material body at its
death.
Christians think that Jesus Christ will instantly transfer them into
the presence of himself and his father, Hare Krishnas feel pretty much
the same way about their spiritual master and Lord Krishna.
But believing something and having it actually happen are two
different instances,
Read the last part of Kaku’s statement about particles collapsing
down. That is important because without his knowing it , he explains
why we might come back to this gross existence no matter what, simply
because the subtle is too unstable or shifty when contrasted to
mundane existence.
But the hitch is that the subtle is stable to those persons who use
astral bodies which vibrate at a high corresponding frequency. Those
celestial beings are not attracted the stability of gross matter as we
currently are.
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http://www.scienceandreligiontoday.com/2010/03/11/are-there-extra-dimensions/