CHAPTER XI
MEMORY
Every   hour    of  our lives   we  call    upon    memory  to  supply  us  with    some    fact    or
detail  from    out our past.   Let memory  wholly  fail    us, and we  find    ourselves
helpless    and out of  joint   in  a   world   we  fail    to  understand. A   poor    memory
handicaps    one     in  the     pursuit     of  education,  hampers     him     in  business    or
professional    success,    and puts    him at  a   disadvantage    in  every   relation    of  life.   On
the other   hand,   a   good    memory  is  an  asset   on  which   the owner   realizes    anew
each    succeeding  day.
1. THE NATURE OF MEMORY
Now that    you come    to  think   of  it, you can recall  perfectly   well    that    Columbus
discovered  America in  1492;   that    your    house   is  painted white;  that    it  rained  a
week    ago today.  But where   were    these   once-known  facts,  now remembered  so
easily, while   they    were    out of  your    mind?   Where   did they    stay    while   you were
not thinking    of  them?   The common  answer  is, "Stored away    in  my  memory."
Yet no  one believes    that    the memory  is  a   warehouse   of  facts   which   we  pack
away    there   when    we  for a   time    have    no  use for them,   as  we  store   away    our old
furniture.
What    is  Retained.—The   truth   is  that    the simple  question    I   asked   you is  by  no
means   an  easy    one,    and I   will    answer  it  myself  by  asking  you an  easier  one:    As
we  sit with    the sunlight    streaming   into    our room,   where   is  the darkness    which
filled  it  last    night?  And where   will    all this    light   be  at  midnight    tonight?    Answer
these    questions,  and     the     ones    I   asked   about   your    remembered  facts   will    be
answered.   While   it  is  true    that,   regardless  of  the conditions  in  our little  room,
darkness    still   exists  wherever    there   is  no  light,  and light   still   exists  wherever
there   is  no  darkness,   yet for this    particular  room    there   is  no  darkness    when    the
sun shines  in, and there   is  no  light   when    the room    is  filled  with    darkness.   So  in
the case    of  a   remembered  fact.   Although    the fact    that    Columbus    discovered
America some    four    hundred years   ago,    that    your    house   is  of  a   white   color,  that    it
rained  a   week    ago today,  exists  as  a   fact    regardless  of  whether your    minds   think
