Themutualpurposeisapracticalvision.Theleadercanuseittounitethesubordinates.Itislikeapieceofblueprint，helpingtheengineertoputbricksintorightplace.Thepurposecanbewrittendown，orimpliedinlife.Schein(2004)suggestedthatorganizationalcultureisapatternofsharedbasicassumptionsthatagroupworkingtogetherforacommongoalhasinventedinlearningtocopewiththeproblemsofexternaladaptationandinternalintegration.
◆Basicassumptions
Thistermcangobackto193-s
System1:exploitive-authoritative(orpunitive-authoritarian)，theleaderhasalowconcernforpeopleandusessuchmethodsasthreatsandotherfear-basedmethodstoachieveconformance.;System2:benevolent-authoritative(orpaternalistic-authoritarian)，theresponsibilityliesatthemanageriallevelsbutnotatthelowerlevelsoftheorganizationalhierarchy;System3:consultativesystem，thesuperiorhassubstantialbutnotcomplete，trustandconfidenceinhissubordinates;4:theparticipative(orgroupinteractive)modelofanorganizationalsystem，superiorshavecompleteconfidenceintheirsubordinates，andmotivationisbyeconomicrewardsbasedongoalswhichhavebeensetinparticipation.
Theprinciplecanusethetheoryofbasicassumptionstounderstandtheemployees，andtomotiveaswellastoinductthem.Iftheworkersalwaysgetpositiveassumptionsfromthecampusenvironment，theymayoptimisticandwillingtocontribute，andviseversa.Theleadermayalsousethebasicassumptionstogetanalysisoftheinstitutionandworkers，thushelpdesigningthefuture.