Cases differ so widely that it
is impossible to give to this question any answer that will be universally
applicable.
"Some people begin by a plunge, as it were, and under some unusual
stimulus become able just for once to see some striking vision; and very
often in such a case, because the experience does not repeat itself, the
seer comes in time to believe that on that occasion he must have been the
victim of hallucination. Others begin by becoming intermittently conscious
of the brilliant colors and vibrations of the human aura; yet others find
themselves with increasing frequency seeing and hearing something to which
those around them are blind and deaf; others, again, see faces,
landscapes, or colored clouds floating before their eyes in the dark
before they sink to rest; while perhaps the commonest experience of all is
that of those who begin to recollect with greater and greater clearness
what they have seen and heard on other planes during sleep."
The authority in question gives the following excellent advice regarding
the subject of the development of clairvoyant power and astral visioning:
"Now the fact is that there are many methods by which it may be developed,
but only one which can be at all safely recommended for general use--that
of which we shall speak last of all.
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