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1、TheLivesofaCellLewisThomasTheLivesofaCellWearetoldthatthetroublewithModernManisthathehasbeentryingtodetachhimselffromnature.Hesitsinthetopmosttiersofpolymer,glass,andsteel,danglinghispulsinglegs,surveyingatadistancethewrithinglifeoftheplanet.Inthisscenario,Manco
2、mesonasastupendouslethalforce,andtheearthispicturedassomethingdelicate,likerisingbubblesatthesurfaceofacountrypond,orflightsoffragilebirds.Butitisillusiontothinkthatthereisanythingfragileaboutthelifeoftheearth;surelythisisthetoughestmembraneimaginableintheuniver
3、se,opaquetoprobability,impermeabletodeath.Wearethedelicatepart,第1页共96页http://www.en8848.com.cn/原版英语阅读网transientandvulnerableascilia.Norisitanewthingformantoinventanexistencethatheimaginestobeabovetherestoflife;thishasbeenhismostconsistentintellectualexertiondown
4、themillennia.Asillusion,ithasneverworkedouttohissatisfactioninthepast,anymorethanitdoestoday.Manisembeddedinnature.Thebiologicscienceofrecentyearshasbeenmakingthisamoreurgentfactoflife.Thenew,hardproblemwillbetocopewiththedawning,intensifyingrealizationofjusthow
5、interlockedweare.Theold,clung-tonotionsmostofushaveheldaboutourspeciallordshiparebeingdeeplyundermined.Item.Agoodcasecanbemadeforournonexistenceasentities.Wearenotmadeup,aswehadalwayssupposed,ofsuccessivelyenrichedpacketsofourownparts.Weareshared,rented,occupied
6、.Attheinteriorofourcells,drivingthem,providingtheoxidativeenergythatsendsusoutfortheimprovementofeachshiningday,arethemitochondria,andinastrictsensetheyarenotours.Theyturnouttobelittleseparatecreatures,thecolonialposterityofmigrantprokaryocytes,probablyprimitive
7、bacteriathatswamintoancestralprecursorsofoureukaryoticcellsandstayedthere.Eversince,theyhavemaintainedthemselvesandtheirways,replicatingintheirownfashion,privately,withtheirownDNAandRNAquitedifferentfromours.Theyareasmuchsymbiontsastherhizobialbacteriaintheroots
8、ofbeans.Withoutthem,wewouldnotmoveamuscle,drumafinger,thinkathought.Mitochondriaarestableandresponsiblelodgers,andIchoosetotrustthem.Butwhatoftheotherlittleanimals,si
