第 19 节
作者:猜火车      更新:2021-02-20 17:38      字数:9322
  were   true;   and   that   after   all   there   were   such   people   as   Enchanters   and
  Magicians。
  After    a  long    pause    he  muttered     to  himself;    〃One     resource    alone
  remains; if I am not to resort to action。 I must try the method of Analogy。〃
  Then      followed     a  still  longer    silence;   after   which    he   continued      our
  dialogue。
  Sphere。 Tell me; Mr。 Mathematician; if a Point moves Northward; and
  leaves a luminous wake; what name would you give to the wake?
  I。 A straight Line。
  Sphere。 And a straight Line has how many extremities?
  I。 Two。
  Sphere。 Now conceive the Northward straight Line moving parallel to
  itself; East and West; so that every point in it leaves behind it the wake of
  a straight Line。 What name will you give to the Figure thereby formed?
  We   will   suppose   that   it   moves   through   a   distance   equal   to   the   original
  straight line。 What name; I say?
  I。 A square。
  Sphere。 And how many sides has a Square? How many angles?
  I。 Four sides and four angles。
  Sphere。 Now stretch your imagination a little; and conceive a Square
  in Flatland; moving parallel to itself upward。
  I。 What? Northward?
  Sphere。 No; not Northward; upward; out of Flatland altogether。
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  If it moved Northward; the Southern points in the Square would have
  to move through the positions previously occupied by the Northern points。
  But that is not my meaning。
  I mean that every Point in youfor you are a Square and will serve the
  purpose of my illustrationevery Point in you; that is to say in what you
  call your inside; is to pass upwards through Space in such a way that no
  Point   shall   pass   through   the   position   previously   occupied   by   any   other
  Point; but each Point shall describe a straight Line of its own。 This is all in
  accordance with Analogy; surely it must be clear to you。
  Restraining my impatiencefor I was now under a strong temptation
  to rush blindly at my Visitor and to precipitate him into Space; or out of
  Flatland; anywhere; so that I could get rid of himI replied:
  〃And what may be the nature of the Figure which I am to shape out by
  this   motion   which   you   are   pleased   to   denote   by   the   word   ‘upward'?   I
  presume it is describable in the language of Flatland。〃
  Sphere。     Oh;    certainly。   It  is  all  plain   and   simple;    and   in   strict
  accordance   with Analogyonly;   by   the   way;   you   must   not   speak   of   the
  result as being a Figure; but as a Solid。 But I will describe it to you。 Or
  rather not I; but Analogy。
  We began with a single Point; which of coursebeing itself a Point
  has only ONE terminal Point。
  One Point produces a Line with TWO terminal Points。
  One Line produces a Square with FOUR terminal Points。
  Now you can give yourself the answer to your own question: 1; 2; 4;
  are evidently in Geometrical Progression。 What is the next number?
  I。 Eight。
  Sphere。 Exactly。 The one Square produces a SOMETHING…WHICH…
  YOU…          DO…NOT…AS…YET…KNOW…A…NAME…FOR…BUT…WHICH…WE…
  CALL…A…CUBE with EIGHT terminal Points。 Now are you convinced?
  I。   And   has   this   Creature   sides;   as   well   as   Angles   or   what   you   call
  〃terminal Points〃?
  Sphere。 Of course; and all according to Analogy。 But; by the way; not
  what    YOU      call  sides;  but  what    WE    call  sides。  You    would    call  them
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  SOLIDS。
  I。 And how many solids or sides will appertain to this Being whom I
  am to generate by the motion of my inside in an 〃upward〃 direction; and
  whom you call a Cube?
  Sphere。   How   can   you   ask?   And   you   a   mathematician!   The   side   of
  anything   is   always;   if   I   may   so   say;   one   Dimension   behind   the   thing。
  Consequently; as there is no Dimension behind a Point; a Point has 0 sides;
  a Line; if I may so say; has 2 sides (for the points of a Line may be called
  by courtesy; its sides); a Square has 4 sides; 0; 2; 4; what Progression do
  you call that?
  I。 Arithmetical。
  Sphere。 And what is the next number?
  I。 Six。
  Sphere。 Exactly。 Then you see you have answered your own question。
  The Cube which you will generate will be bounded by six sides; that is to
  say; six of your insides。 You see it all now; eh?
  〃Monster;〃 I shrieked; 〃be thou juggler; enchanter; dream; or devil; no
  more   will   I   endure   thy   mockeries。   Either   thou   or   I   must   perish。〃   And
  saying these words I precipitated myself upon him。
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  SECTION 17                How the Sphere; having in vain
  tried words; resorted to deeds
  It was in vain。 I brought my hardest right angle into violent collision
  with    the   Stranger;    pressing    on   him    with   a  force   sufficient    to  have
  destroyed      any    ordinary     Circle:   but    I  could    feel   him    slowly    and
  unarrestably slipping from my contact; not edging to the right nor to the
  left; but   moving somehow out   of the   world;  and vanishing   into   nothing。
  Soon there was a blank。 But still I heard the Intruder's voice。
  Sphere。 Why will you refuse to listen to reason? I had hoped to find in
  youas being a man of sense and an accomplished mathematician a fit
  apostle   for   the   Gospel   of   the Three   Dimensions;   which   I   am  allowed   to
  preach once only in a thousand years: but now I know not how to convince
  you。 Stay; I have it。 Deeds; and not words; shall proclaim the truth。 Listen;
  my friend。
  I have told you I can see from my position in Space the inside of all
  things   that   you   consider   closed。   For   example;   I   see   in   yonder   cupboard
  near   which   you   are   standing;   several   of   what   you   call   boxes   (but   like
  everything else in Flatland; they have no tops or bottom) full of money; I
  see also two tablets of accounts。 I am about to descend into that cupboard
  and to bring you one of those tablets。 I saw you lock the cupboard half an
  hour ago; and I know you have the key in your possession。 But I descend
  from     Space;    the  doors;   you   see;   remain    unmoved。      Now    I  am   in  the
  cupboard and am taking the tablet。 Now I have it。 Now I ascent with it。
  I rushed to the closet and dashed the door open。 One of the tablets was
  gone。 With a mocking laugh; the Stranger appeared in the other corner of
  the room; and at the same time the tablet appeared upon the floor。 I took it
  up。 There could be no doubtit was the missing tablet。
  I groaned with horror; doubting whether I was not out of my sense; but
  the   Stranger   continued:   〃Surely   you   must   now   see   that   my   explanation;
  and no other; suits the phenomena。 What you call Solid things are really
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  superficial; what you call Space is really nothing but a great Plane。 I am in
  Space; and look down upon the insides of the things of which you only see
  the outsides。 You could leave the Plane yourself; if you could but summon
  up   the   necessary   volition。  A  slight   upward   or   downward   motion   would
  enable you to see all that I can see。
  〃The higher I mount; and the further I go from your Plane; the more I
  can see; though of course I see it on a smaller scale。 For example; I am
  ascending; now I can see your neighbour the Hexagon and his family in
  their several apartments; now I see the inside of the Theatre; ten doors off;
  from  which   the   audience  is   only   just   departing;   and   on   the   other   side   a
  Circle in his study; sitting at his books。 Now I shall come back to you。 And;
  as a crowning proof; what do you say to my giving you a touch; just the
  least touch; in your stomach? It will not seriously injure you; and the slight
  pain you may suffer cannot be compared with the mental benefit you will
  receive。〃
  Before I could utter a word of remonstrance; I felt a shooting pain in
  my   inside;   and   a   demoniacal   laugh   seemed   to   issue   from   within   me。 A
  moment afterwards the sharp agony had ceased; leaving nothing but a dull
  ache behind; and the Stranger began to reappear; saying; as he gradually
  increased in size; 〃There; I have not hurt you much; have I? If you are not
  convinced now; I