Chapter 4 The World As Percept

    Chapter 4 The World
        as Percept

 
    [1] Through thinking,
       concepts
           and ideas arise.

    What
         a concept
            is
        cannot be expressed
           in words.

    Words
        can do
           no more than draw
              our attention
                 to the fact
         that we
              have concepts.

    When someone
          sees a tree,
       his thinking
          reacts to
             his observation,
       an ideal element
          is added
             to the object,
       and
          he considers
             the object
                and the ideal complement
           as belonging together.

    When
         the object disappears
            from his field
               of observation,
       only the ideal counterpart
           of it remains.

    This latter
        is the concept
           of the object.

    The more
         our range
            of experience
               is widened,
       the greater
          becomes
             the sum
           of our concepts.

    But
         concepts
              certainly do not stand
            isolated
           from one another.

    They combine
          to form
             a systematically ordered whole.

    The concept "organism",
       for instance,
          links up
             with those
           of "orderly development"
               and "growth".

    Other concepts
          which
              are based on single objects
           merge together into a unity.

    All concepts
          I may form of lions
             merge
            into the collective concept "lion".

    In this
         way all the separate
            concepts
               combine to form
                  a closed conceptual system
         in which
            each has its special place.

    Ideas
         do not differ qualitatively
            from concepts.

    They are
         but fuller,
            more saturated,
               more comprehensive concepts.

    I must attach
        special importance
           to the necessity
              of bearing
                 in mind,
                here,
                   that I
                      make thinking my starting point,
      and
         not concepts
            and ideas
        which
           are first gained
          by means of thinking.

    For
         these latter already presuppose thinking.

    My remarks
        regarding
           the self-supporting and self-determined nature
              of thinking cannot,
           therefore,
              be simply transferred
                 to concepts.

    (I make special
        mention of this,
       because it
          is here
             that
                 I differ
               from Hegel,
       who regards
           the concept
              as something primary and original.)
 
    [2] Concepts
        cannot be gained
           through observation.

    This follows
        from the simple fact
       that the growing human being
         only slowly
            and gradually forms
               the concepts corresponding
        to the objects
           which surround him.

    Concepts
        are added
           to observation.
 
    [3] A philosopher widely read
        at the present day
       -- Herbert Spencer, --
             describes
                   the mental process
                 which
                     we carry out
                   with respect
                      to observation
                 as follows:

    [4] If,
       when walking
           through the fields some day
               in September,
       you hear
           a rustle
              a few yards
                 in advance,
       and
          on observing
             the ditch-side
         where
             it occurs,
       see
          the herbage agitated,
       you will probably turn towards
          the spot to learn
             by what
                this sound
                   and motion are produced.

    As you
          approach
             there
            flutters
           into the ditch a partridge;
       on seeing
          which
             your curiosity
                is satisfied
       -- you have
          what
         you call an explanation
            of the appearances.

    The explanation,
       mark,
          amounts to this;
             that whereas
                throughout life
                   you
                have had
                    countless experiences of disturbance
                   among small stationary bodies,
       accompanying the movement
           of other bodies
               among them,
       and have generalized
           the relation
              between such disturbances
                 and such movements,
       you consider
          this particular disturbance explained
             on finding
                it
              to present
                  an instance
                     of the like relation.

    A closer analysis
        shows
           matters
          to stand very differently
             from the way described above.

    When
         I hear a noise,
       I first look
          for the concept
             which fits this observation.

    It is this concept
          which
             first leads me
           beyond the mere noise.

    If one
          thinks no further,
       one simply hears
           the noise
        and is content
           to leave
              it
           at that.

    But my reflecting
        makes
           it clear
              to me
             that
                 I have
                    to regard
                       the noise
                   as an effect.

    Therefore not until
         I have connected
            the concept
           of effect
              with the perception
                 of the noise,
       do I
          feel the need to go
             beyond the solitary observation
                and
            look
               for the cause.

    The concept
        of effect
           calls up that of cause,
      and my next step.
         is to look
            for the object
               which is being the cause,
      which
         I find
            in the shape
               of the partridge.

    But these concepts,
       cause and effect,
          I can never gain through
             mere observation,
       however many instances the observation
          may cover.

    Observation
        evokes thinking,
       and
          it is thinking that
        first shows me how
           to link
              one separate experience
           to another.
 
    [5] If one
        demands
           of a
        "strictly
           objective science"
              that it should take
                 its content
               from observation alone,
           then
              one must
                 at the same time
            demand
               that it
                  should forego all thinking.

    For thinking,
       by its very nature,
          goes
             beyond what
            is observed.
 
    [6] We must now pass
        from thinking
           to the being
          that thinks;
      for it
         is
            through the thinker
               that thinking
           is combined
              with observation.

    Human consciousness
        is the stage
           upon which concept
               and observation
            meet
                  and become
                linked
               to one another.

    In saying
          this
             we have in fact characterized
                this (human) consciousness.

    It is the mediator
        between thinking
            and observation.

    In as far as we
        observe
           a thing it appears
              to us as given;
       in as far as we think,
          we appear
             to ourselves
         as being active.

    We regard
        the thing
       as object
         and ourselves
        as thinking subject.

    Because
         we direct our thinking
            upon our observation,
       we have consciousness of objects;
          because
         we direct it upon ourselves,
       we have consciousness of ourselves,
          or self-consciousness.

    Human consciousness
        must
           of necessity
              be
           at the same time
               self-consciousness
          because it
              is a consciousness
         which thinks.

    For when
        thinking contemplates
            its own activity,
      it makes
          its own essential being,
             as subject,
          into a thing,
      as object.
 
    [7] It must,
       however,
          not be overlooked
             that
         only with the help
            of thinking
               am
         I able
            to determine myself
           as subject and
               contrast myself with objects.

    Therefore thinking
        must never be regarded
           as a merely subjective activity.

    Thinking
        lies
           beyond subject
              and object.

    It produces
        these two concepts
       just
      as it produces
         all others.

    When,
       therefore,
          I,
       as thinking subject,
          refer a concept
             to an object,
       we must not regard
           this reference
              as something
                 purely subjective.

    It is not the subject
          that makes the reference,
       but thinking.

    The subject
        does not think
           because it is a subject;
       rather it
          appears
             to itself
         as subject
             because it can think.

    The activity
        exercised
           by man
              as a thinking being is thus
          not merely subjective.

    Rather is it something
        neither subjective
           nor objective,
      that transcends both these concepts.

    I ought never
          to say
         that my individual subject
            thinks,
       but much more
           that my individual subject lives
              by the grace
                 of thinking.

    Thinking is thus
        an element
       which
         leads
        me out
           beyond myself and
         connects me
            with the objects.

    But
         at the same time
            it separates me from them,
       inasmuch as
          it sets me,
             as subject,
           over against them.
 
    [8] It is just
          this
             which constitutes
                the double nature
                   of the human being.

    We think,
       and thereby embrace
           both ourselves and the rest
              of the world.

    But
         at the same time
             it is
           by means
               of thinking
              that
                 we determines ourselves
                    as an individual confronting
          the things.
 
    [9] We must next
          ask ourselves how
             that other element,
       which we
          have so far simply called
             the object
           of observation
               and
                  which meets
                     the thinking
                   in our consciousness,
       comes
          into our consciousness
             at all.
 
    [10] In order to
          answer
             this question
                we must eliminate
               from our field
                   of observation
             everything
                 that has been imported
           by thinking.

    For
         at any moment
             the content
                of our consciousness
                   will already be interwoven
           with concepts
               in the most varied ways.
 
    [11] We must imagine
          that
             a being
                with fully developed
                   human intelligence
                      originates
           out of nothing
              and confronts
                 the world.

    What
         it would be aware
            of,
       before it
          sets
         its thinking
            in motion,
       would be
          the pure content
             of observation.

    The world
        would
           then appear
              to this
            being
               as nothing
              but
                 a mere disconnected aggregate
               of objects
                  of sensation:
       colors,
          sounds,
       sensations
           of pressure,
       of warmth,
          of taste
             and smell;
       also feelings
           of pleasure and pain.

    This aggregate
        is the content
           of pure,
       unthinking observation.

    Over against it
        stands thinking,
       ready
          to begin
             its activity
           as soon
              as a point
                 of attack
                presents itself.

    Experience
        shows
           at once
          that this does happen.

    Thinking is able
          to draw
              threads
           from one element
               of observation
                   to another.

    It links definite concepts
        with these elements
           and thereby establishes
       a relationship
          between them.

    We have already seen how
        a noise
       which
          we hear
             becomes
                 connected
        with another observation
           by our identifying the former
        as the effect
            of the latter.

    [12] If now
         we recollect
             that the activity
                of thinking
                   is
               on no account
              to be considered
                 as merely subjective,
       then we
          shall also not be tempted
              to believe
                 that
           the relationships
              thus established
           by thinking
          have merely subjective validity.
 
    [13] Our next task
        is to discover
           by means
              of thoughtful reflection
         what relation
            the immediately given content
           of observation
              mentioned
            above has
               to the conscious subject.
 
    [14] The ambiguity of current speech
        makes it necessary
           for me to come
              to an agreement
                 with my readers
          concerning the use
             of a word
         which
             I shall have
          to employ
             in what follows.

    I shall apply
          the word "percept"
             to the immediate objects
                of sensation
                   enumerated above,
       in so far
           as the conscious subject
              apprehends them
                 through observation.

    It is,
       then,
          not the process
             of observation
         but the object
            of observation
               which I
              call the "percept".
 
    [15] I do not choose
        the term "sensation",
       since this
          has a definite meaning
             in physiology
         which is narrower
            than
         that
            of my concept
           of "percept".

    I can speak
        of a feeling
           in myself (emotion)
              as percept,
      but not
          as sensation
              in the physiological sense
                  of the term.

    Even my feeling
        becomes
            known
           to me
               by becoming
                   a percept
                       for me.

    And the way
         in which
            we
               gain
                  knowledge
                     of our thinking
                   through observation
                      is
             such that
                thinking too,
       in its first appearance
           for our consciousness,
       may be called
          a percept.
 
    [16] The naïve man
        regards
           his percepts,
       such as
          they appear
             to his immediate apprehension,
       as things
          having an existence wholly independent
             of him.

    When
         he sees
             a tree
                 he believes
                    in the first instance
         that it stands
            in the form
         which
             he sees,
       with the colors
           of its various parts,
              and so on,
           there on the spot towards which
              his gaze
            is directed.

    When the same man
          sees
              the sun
                 in the morning
                    appear
           as a disc
               on the horizon,
       and follows
          the course
             of this disc,
       he believes
          that all this
             actually exists and happens just
           as he
              observes it.

    To this belief
          he clings until
             he meets with further percepts
         which
              contradict
           his former ones.

    The child
         who
             as yet has
                no experience
               of distance
                  grasps
                     at the moon,
       and only corrects
          its picture
             of the reality,
       based
          on first impressions,
       when a second percept
          contradicts the first.

    Every extension
        of the circle
            of my percepts
       compels me
          to correct
             my picture
                of the world.

    We see this
        in everyday life,
       as well as in
           the spiritual development
              of mankind.

    The picture
         which
             the ancients
                made
           for themselves
               of the relation
                   of the earth
                       to the sun
                           and other heavenly
                      bodies had to be replaced
                         by another
         when Copernicus
            found that it
               was not
                  in accordance
                     with some percepts,
       which
          in those early days
             were unknown.

    A man
         who had been born blind said,
       when operated on
           by Dr. Franz,
       that the picture
           of the size
               of objects
         which he
            had formed
           by his sense
               of touch
                   before his operation,
       was
          a very different one.

    He had
          to correct
              his tactual percepts
           by his visual percepts.
 
    [17] How is it
         that we
            are compelled
          to make
             these continual corrections
                to our observations?
 
    [18] A simple reflection
        gives the answer
           to this question.

    When
         I stand
            at one end
               of an avenue,
       the trees
           at the other end,
              away from me,
           seem smaller and nearer
              together than
                 those
         where I stand.

    My percept-picture changes
         when
             I change
                the place
           from
              which I am looking.

    Therefore the form
         in which
            it
               presents itself
                  to me
                is dependent
           on a condition
              which is due
                 not to the object
                    but to me,
       the perceiver.

    It is all the same
        to the avenue
       wherever I stand.

    But
         the picture
             I have of it
                depends essentially
           on just this viewpoint.

    In the same way,
       it makes
           no difference
              to the sun
                 and the planetary system
                that human beings
                   happen
                  to look
                     at them
                        from the earth;
       but
          the percept-picture
             of the heavens
            presented
           to them
              is determined
           by the fact
              that they
          inhabit the earth.

    This dependence
        of our percept-picture
            on our place
                of observation
       is the easiest one
           to understand.

    The matter
        becomes more difficult
           when
              we realize how
             our world of percepts
                is dependent
               on our bodily
                  and spiritual organization.

    The physicist
        shows us
           that
         within the space
            in which
          we
              hear
                  a sound there are vibrations
                     of the air,
       and also
          that the body
         in which
             we seek
                 the origin of the sound
                    exhibits
                       a vibrating movement
                   of its parts.

    We perceive
        this movement
       as sound only
          if we
             have a normally constructed ear.

    Without this
          the world
              would be
                 for ever silent
               for us.

    Physiology
        tells us
           that there are
              people
                 who perceive
                    nothing
                       of the magnificent splendor
                          of color
         which surrounds us.

    Their percept-picture
        has only degrees
           of light and dark.

    Others are blind only
        to one color,
           for example,
        red.

    Their world picture
        lacks
           this hue,
       and
          hence
             it is actually
                 a different one
           from
         that
            of the average man.

    I should like
          to call
              the dependence
           of my percept-picture
              on my place
                 of observation,
        "mathematical",
           and its dependence
               on my organization,
           "qualitative".

    The former
        determines the proportions
           of size
               and mutual distances
                   of my percepts,
       the latter their quality.

    The fact
          that
             I see a red surface
                as red
       -- this qualitative determination --