All the great religions have implicitly understood--though without
analysis--the vast importance of these spiritual intuitions and
faculties lying below the surface of the everyday mind; and have
perfected machinery tending to secure their release and their training.
This is of two kinds: first, religious ceremonial, addressing itself to
corporate feeling; next the discipline of meditation and prayer, which
educates the individual to the same ends, gradually developing the
powers of the foreconscious region, steadying them, and bringing them
under the control of the purified will. Without some such education,
widely as its details may vary, there can be no real living of the
spiritual life.

"A going out into the life of sense
Prevented the exercise of earnest realization."[88]

Psychologists sometimes divide men into the two extreme classes of
extroverts and introverts. The extrovert is the typical active; always
leaning out of the window and setting up contacts with the outside
world. His thinking is mainly realistic. That is to say, it deals with
the data of sense. The introvert is the typical contemplative,
predominantly interested in the inner world. His thinking is mainly
autistic, dealing with the results of intuition and feeling, working
these up into new structures and extorting from them new experiences. He
is at home in the foreconscious, has its peculiar powers under control;
and instinctively obedient to the mystic command to sink into the ground
of the soul, he leans towards those deep wells of his own being which
plunge into the unconscious foundations of life. By this avoidance of
total concentration on the sense world--though material obtained from it
must as a matter of fact enter into all, even his most "spiritual"
creations--he seems able to attend to the messages which intuition picks