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Rationalism is a social policy tree in Civilization V. It is available at the start of the Renaissance Era. It cannot be active at the same time as Piety (Vanilla and GodsKings5 clear.png only).

Game Info[edit | edit source]

Rationalism improves the ability to use and generate Science Science.

Adopting Rationalism:

  • boosts Science gained from research agreements by 50% (Vanilla)
  • grants +15% Science Science while the empire is 20xHappiness5.png Happy (GodsKings5 clear.png)
  • +10% Science Science while the empire is 20xHappiness5.png Happy. Unlocks building the Porcelain Tower (BNW-only.png)

Adopting all Policies in the Rationalism tree will grant:

  • +1 Gold Gold from Science Science buildings (Vanilla)
  • 2 free Technologies. May purchase Great Scientists with Faith Faith (GodsKings5 clear.png)
  • a free Technology. It also allows the purchase of Great Scientists with Faith Faith starting in the Industrial Era (BNW-only.png).
Policy Effect Requirement
Secularism Secularism +2 Science Science from every Specialist. Adopting Rationalism
Humanism Humanism +1 20xHappiness5.png Happiness (local city 20xHappiness5.png Happiness in GodsKings5 clear.png) from every University, Observatory and Public School (Vanilla and GodsKings5 clear.png).
Great Scientists are earned 25% faster (BNW-only.png).
Adopting Rationalism
Free Thought Free Thought +1 Science Science from every Trading Post and +17% Science Science from Universities. Secularism (Vanilla and GodsKings5 clear.png)
Humanism (BNW-only.png)
Sovereignty Sovereignty +15% Science Science while your empire is 20xHappiness5.png Happy (Vanilla).
+1 Gold Gold from Science Science buildings (GodsKings5 clear.png and BNW-only.png).
Humanism (Vanilla and GodsKings5 clear.png
Secularism (BNW-only.png)
Scientific Revolution Scientific Revolution Gives 2 free Technologies (Vanilla).
Boosts Science Science gained from Research Agreements by 50% (GodsKings5 clear.png and BNW-only.png).
Free Thought (Vanilla and GodsKings5 clear.png)
Sovereignty (BNW-only.png)

Strategy[edit | edit source]

Main article: Social strategy (Civ5)#Rationalism

Civilopedia entry[edit | edit source]

Rationalism is a worldview that looks to reason (rather than, say, faith) to explain the world. Rationalism believes that reason trumps all other ways of interpreting the world, including any data gathered by one's five senses. This philosophy can be traced back to the great Socrates of ancient Greece, and it enjoyed something of a resurgence during the 16th and 17th century in Europe, when it was explored by men like Descartes, Spinoza, and Kant.

Related achievements

Eighty-Eight Miles per Hour
Eighty-Eight Miles per Hour
Fully Explore the Rationalism Policy Track.
Civilization V Social Policies [edit]
Tradition

AristocracyLanded EliteLegalismMonarchyOligarchy

Liberty

CitizenshipCollective RuleMeritocracyRepresentationRepublic

Honor

DisciplineMilitary CasteMilitary TraditionProfessional ArmyWarrior Code

Piety

Free ReligionMandate of HeavenOrganized ReligionReformationReligious ToleranceTheocracy

Patronage

AestheticsConsulatesCultural DiplomacyEducated EliteMerchant ConfederacyPhilanthropyScholasticism

Commerce

EntrepreneurshipMercantilismMercenary ArmyMerchant NavyNaval TraditionProtectionismTrade Unions Wagon Trains

Rationalism

Free ThoughtHumanismScientific RevolutionSecularismSovereignty

Aesthetics

Artistic GeniusCultural CentersCultural Exchange Fine ArtsFlourishing of the Arts

Exploration

Maritime InfrastructureMerchant NavyNaval TraditionNavigation SchoolTreasure Fleets

Freedom

Civil SocietyConstitutionDemocracyFree SpeechUniversal Suffrage

Autocracy

FascismMilitarismPolice StatePopulismTotal War

Order

CommunismNationalismPlanned EconomySocialismUnited Front

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