essays on life, art and science-第35部分

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development；　to　be　repeating　something　which　in　the　person　of　its
parent　or　parents　it　has　done　once；　and　if　once；　then　any　number　of
times；　already。

It　is　obvious；　therefore；　that　the　germ…plasm　（or　whatever　the　fancy
word　for　it　may　be）　of　any　one　generation　is　as　physically　identical
with　the　germ…plasm　of　its　predecessor　as　any　two　things　can　be。
The　difference　between　Professor　Weismann　and；　we　will　say；
Heringians　consists　in　the　fact　that　the　first　maintains　the　new
germ…plasm　when　on　the　point　of　repeating　its　developmental
processes　to　take　practically　no　cognisance　of　anything　that　has
happened　to　it　since　the　last　occasion　on　which　it　developed　itself；
while　the　latter　maintain　that　offspring　takes　much　the　same　kind　of
account　of　what　has　happened　to　it　in　the　persons　of　its　parents
since　the　last　occasion　on　which　it　developed　itself；　as　people　in
ordinary　life　take　of　things　that　happen　to　them。　　In　daily　life
people　let　fairly　normal　circumstances　come　and　go　without　much　heed
as　matters　of　course。　　If　they　have　been　lucky　they　make　a　note　of
it　and　try　to　repeat　their　success。　　If　they　have　been　unfortunate
but　have　recovered　rapidly　they　soon　forget　it；　if　they　have
suffered　long　and　deeply　they　grizzle　over　it　and　are　scared　and
scarred　by　it　for　a　long　time。　　The　question　is　one　of　cognisance　or
non…cognisance　on　the　part　of　the　new　germs；　of　the　more　profound
impressions　made　on　them　while　they　were　one　with　their　parents；
between　the　occasion　of　their　last　preceding　development；　and　the
new　course　on　which　they　are　about　to　enter。　　Those　who　accept　the
theory　put　forward　independently　by　Professor　Hering　of　Prague
（whose　work　on　this　subject　is　translated　in　my　book；　〃Unconscious
Memory〃）　｛40｝　and　by　myself　in　〃Life　and　Habit；〃　｛41｝　believe　in
cognizance；　as　do　Lamarckians　generally。　　Weismannites；　and　with
them　the　orthodoxy　of　English　science；　find　non…cognisance　more
acceptable。

If　the　Heringian　view　is　accepted；　that　heredity　is　only　a　mode　of
memory；　and　an　extension　of　memory　from　one　generation　to　another；
then　the　repetition　of　its　development　by　any　embryo　thus　becomes
only　the　repetition　of　a　lesson　learned　by　rote；　and；　as　I　have
elsewhere　said；　our　view　of　life　is　simplified　by　finding　that　it　is
no　longer　an　equation　of；　say；　a　hundred　unknown　quantities；　but　of
ninety…nine　only；　inasmuch　as　two　of　the　unknown　quantities　prove　to
be　substantially　identical。　　In　this　case　the　inheritance　of
acquired　characteristics　cannot　be　disputed；　for　it　is　postulated　in
the　theory　that　each　embryo　takes　note　of；　remembers　and　is　guided
by　the　profounder　impressions　made　upon　it　while　in　the　persons　of
its　parents；　between　its　present　and　last　preceding　development。　　To
maintain　this　is　to　maintain　use　and　disuse　to　be　the　main　factors
throughout　organic　development；　to　deny　it　is　to　deny　that　use　and
disuse　can　have　any　conceivable　effect。　　For　the　detailed　reasons
which　led　me　to　my　own　conclusions　I　must　refer　the　reader　to　my
books；　〃Life　and　Habit〃　｛42｝　and　〃Unconscious　Memory；〃　｛42｝　the
conclusions　of　which　have　been　often　adopted；　but　never；　that　I　have
seen；　disputed。　　A　brief　resume　of　the　leading　points　in　the
argument　is　all　that　space　will　here　allow　me　to　give。

We　have　seen　that　it　is　a　first　requirement　of　heredity　that　there
shall　be　physical　continuity　between　parents　and　offspring。　　This
holds　good　with　memory。　　There　must　be　continued　identity　between
the　person　remembering　and　the　person　to　whom　the　thing　that　is
remembered　happened。　　We　cannot　remember　things　that　happened　to
some　one　else；　and　in　our　absence。　　We　can　only　remember　having
heard　of　them。　　We　have　seen；　however；　that　there　is　as　much　bona…
fide　sameness　of　personality　between　parents　and　offspring　up　to　the
time　at　which　the　offspring　quits　the　parent's　body；　as　there　is
between　the　different　states　of　the　parent　himself　at　any　two
consecutive　moments；　the　offspring　therefore；　being　one　and　the　same
person　with　its　progenitors　until　it　quits　them；　can　be　held　to
remember　what　happened　to　them　within；　of　course；　the　limitations　to
which　all　memory　is　subject；　as　much　as　the　progenitors　can　remember
what　happened　earlier　to　themselves。　　Whether　it　does　so　remember
can　only　be　settled　by　observing　whether　it　acts　as　living　beings
commonly　do　when　they　are　acting　under　guidance　of　memory。　　I　will
endeavour　to　show　that；　though　heredity　and　habit　based　on　memory　go
about　in　different　dresses；　yet　if　we　catch　them　separatelyfor
they　are　never　seen　togetherand　strip　them　there　is　not　a　mole　nor
strawberry…mark；　nor　trick　nor　leer　of　the　one；　but　we　find　it　in
the　other　also。

What　are　the　moles　and　strawberry…marks　of　habitual　action；　or
actions　remembered　and　thus　repeated？　　First；　the　more　often　we
repeat　them　the　more　easily　and　unconsciously　we　do　them。　　Look　at
reading；　writing；　walking；　talking；　playing　the　piano；　&c。；　the
longer　we　have　practised　any　one　of　these　acquired　habits；　the　more
easily；　automatically　and　unconsciously；　we　perform　it。　　Look；　on
the　other　hand；　broadly；　at　the　three　points　to　which　I　called
attention　in　〃Life　and　Habit〃：…

I。　　That　we　are　most　conscious　of　and　have　most　control　over　such
habits　as　speech；　the　upright　position；　the　arts　and　scienceswhich
are　acquisitions　peculiar　to　the　human　race；　always　acquired　after
birth；　and　not　common　to　ourselves　and　any　ancestor　who　had　not
become　entirely　human。

II。　　That　we　are　less　conscious　of　and　have　less　control　over　eating
and　drinking　＇provided　the　food　be　normal＇；　swallowing；　breathing；
seeing；　and　hearingwhich　were　acquisitions　of　our　prehuman
ancestry；　and　for　which　we　had　provided　ourselves　with　all　the
necessary　apparatus　before　we　saw　light；　but　which　are　still；
geologically　speaking；　recent。

III。　　That　we　are　most　unconscious　of　and　have　least　control　over
our　digestion　and　circulationpowers　possessed　even　by　our
invertebrate　ancestry；　and；　geologically　speaking；　of　extreme
antiquity。

I　have　put　the　foregoing　very　broadly；　but　enough　is　given　to　show
the　reader　the　gist　of　the　argument。　　Let　it　be　noted　that
disturbance　and　departure；　to　any　serious　extent；　from　normal
practice　tends　to　induce　resumption　of　consciousness　even　in　the
case　of　such　old　habits　as　breathing；　seeing；　and　hearing；　digestion
and　the　circulation　of　the　blood。　　So　it　is　with　habitual　actions　in
general。　　Let　a　player　be　never　so　proficient　on　any　instrument；　he
will　be　put　out　if　the　normal　conditions　under　which　he　plays　are
too　widely　departed　from；　and　will　then　do　consciously；　if　indeed　he
can　do　it　at　all；　what　he　had　hitherto　been　doing　unconsciously。　　It
is　an　axiom　as　regards　actions　acquired　after　birth；　that　we　never
do　them　automatically　save　as　the　result　of　long　practice；　the
stages　in　the　case　of　any　acquired　facility；　the　inception　of　which
we　have　been　able　to　watch；　have　invariably　been　from　a　nothingness
of　ignorant　impotence　to　a　little　somethingness　of　highly　self…
conscious；　arduous　performance；　and　thence　to　the
unselfconsciousness　of　easy　mastery。　　I　saw　one　year　a　poor　blind
lad　of　about　eighteen　sitting　on　a　wall　by　the　wayside　at　Varese；
playing　the　concertina　with　his　whole　body；　and　snorting　like　a
child。　　The　next　year　the　boy　no　longer　snorted；　and　he　played　with
his　fingers　only；　the　year　after　that　he　seemed　hardly　to　know
whether　he　was　playing　or　not；　it　came　so　easily　to　him。　　I　know　no
exception　to　this　rule。　　Where　is　the　intricate　and　at　one　time
difficult　art　in　which　perfect　automatic　ease　has　been　reached
except　as　the　result　of　long　practice？　　If；　then；　wherever　we　can
trace　the　development　of　automatism　we　find　it　to　have　taken　this
course；　is　it　not　most　reasonable　to　infer　that　it　has　taken　the
same　even　when　it　has　risen　in　regions　that　are　beyond　our　ken？
Ought　we　not；　whenever　we　see　a　difficult　action　performed；
automatically　to　suspect　antecedent　practice？　　Granted　that　without
the　considerations　in　regard　to　identity　presented　above　it　would
not　have　been　easy　to　see　where　a　baby　of　a　day　old　could　have　had
the　practice　which　enables　it　to　do　as　much　as　it　does
unconsciously；　but　even　without　these　considerations　it　would　have
been　more　easy　to　suppose　that　the　necessary　opportunities　had　not
been　wanting；　than　that　the　easy　performance　could　have　been　gained
without　practice　and　memory。

When　I　wrote　〃Life　and　Habit〃　（originally　published　in　1877）　I　said
in　slightly　different　words：…

〃Shall　we　say　that　a　baby　of　a　day　old　sucks　（which　involves　the
whole　principle　of　the　pump　and　hence　a　profound　practical　knowledge
of　the　laws　of　pneumatics　and　hydrostatics）；　digests；　oxygenises　its
bloodmillions　of　years　before　any　one　had　discovered　oxygensees
and　hears；　operations　that　involve　an　unconscious　knowledge　of　the
facts　concerning　optics　and　acoustics　compared　with　which　the
conscious　discoveries　of　Newton　are　insignificantshall　we　say　that
a　baby　can　do　all　these　things　at　once；　doing　them　so　well　and　so
regularly　without　being　even　able　to　give　them　attention；　and　yet
without　mistake；　and　shall　we　also　say　at　the　same　time　that　it　has
not　learnt　to　do　them；　and　never　did　them　before？

〃Such　an　assertion　would　contradict　the　whole　experience　of
mankind。〃

I　have　met　with　nothing　during　the　thirteen　years　since　the
foregoing　was　published　that　has　given　me　any　qualms　about　its
soundness。　　From　the　point　of　view　of　the　law　courts　and　everyday
life　it　is；　of　course；　nonsense；　but　in　the　kingdom　of　thought；　as
in　that　of　heaven；　there　are　many　mansions；　and　what　would　be
extravagance　in　the　cottage　or　farmhouse；　as　it　were；　of　daily
practice；　is　but　common　decency　in　the　palace　of　high　philosophy；
wherein　dwells　evolution。　　If　we　leave　evolution　alone；　we　may　stick
to　common　practice　and　the　law　courts；　touch　evolution　and　we　are　in
another　world；　not　higher；　not　lower；　but　different　as　harmony　from
counterpoint。　　As；　however；　in　the　most　absolute　counterpoint　there
is　still　harmony；　and　in　the　most　absolute　harmony　still
counterpoint；　so　high　philosophy　should　be　still　in　touch　with
common　sense；　and　common　sense　with　high　philosophy。

The　common…sense　view　o