Ethics and Moral Philosophy

Normative ethical theories: utilitarianism, deontology, virtue ethics, social contract theory, and applied ethics dilemmas (trolley problem, privacy, bioethics).

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The major theories of moral philosophy: utilitarianism, deontology, virtue ethics and social contract theory, with the trolley problem as a thought experiment. Each entry gives founders, the core principle, strengths, criticisms and variants.

Use it when

  • You need an even-handed summary of a major ethical theory with its main objections.
  • You are analyzing a dilemma from more than one ethical perspective.

Watch out for

  • The theories are frameworks; many philosophers combine elements or work with other approaches such as care ethics.
  • The summaries describe positions, not endorsements.

The data

Theories

NameFoundersCore principleFormulaStrengthsCriticismsVariantsKant formulationsAristotle virtuesEudaimoniaRawls veil of ignoranceRawls principlesScenarioVariationsEthical analysisSignificance
Utilitarianism (Consequentialism)
  • Jeremy Bentham (founder; hedonic calculus)
  • John Stuart Mill (higher/lower pleasures; 'better to be Socrates dissatisfied')
  • Peter Singer (preference utilitarianism; effective altruism)
Maximize overall happiness/well-being; the right action produces the greatest good for the greatest numberChoose action A that maximizes Σ(utility of all affected beings)
  • Intuitive appeal of maximizing well-being
  • Impartial (everyone counts equally)
  • Provides clear decision procedure
  • May justify harming minorities for majority benefit
  • Difficult to calculate consequences
  • Demands too much (constant sacrifice for others)
  • Act utilitarianism (evaluate each act)
  • Rule utilitarianism (follow rules that maximize utility)
nullnullnullnullnullnullnullnullnull
Deontology (Duty Ethics)
  • Immanuel Kant (categorical imperative; duty-based ethics)
  • W.D. Ross (prima facie duties)
Actions are right or wrong in themselves, regardless of consequences; morality is about following universal moral lawsnull
  • Respects individual rights and dignity
  • Clear moral rules
  • Doesn't sacrifice individuals for collective good
  • Rigid rules may conflict (lying to protect innocent)
  • Ignores consequences entirely
  • Difficult to derive specific duties
null
FormulationDescription
Formula of Universal LawAct only on maxims you can will to become universal law
Formula of HumanityTreat humanity (yourself and others) always as an end, never merely as a means
nullnullnullnullnullnullnullnull
Virtue Ethics
  • Aristotle (Nicomachean Ethics; eudaimonia; golden mean)
  • Alasdair MacIntyre (After Virtue; traditions and practices)
Focus on character and virtues rather than rules or consequences; asks 'What would a virtuous person do?'null
  • Holistic (considers whole life, not isolated acts)
  • Emphasizes moral education and character development
  • Flexible and context-sensitive
  • Virtues vary across cultures
  • No clear action guidance in specific cases
  • Circular: virtuous person = one who does virtuous acts
nullnull
VirtueMean between
CourageRashness (excess) — Courage (mean) — Cowardice (deficiency)
TemperanceLicentiousness (excess) — Temperance (mean) — Insensibility (deficiency)
GenerosityWastefulness (excess) — Generosity (mean) — Stinginess (deficiency)
Human flourishing; living in accordance with reason and virtue; not mere pleasure but fulfilling one's function as a rational beingnullnullnullnullnullnull
Social Contract Theory
  • Thomas Hobbes (Leviathan; state of nature = 'nasty, brutish, short')
  • John Locke (natural rights; limited government)
  • Jean-Jacques Rousseau (general will; popular sovereignty)
  • John Rawls (A Theory of Justice; veil of ignorance)
Moral and political obligations arise from implicit agreement among individuals to form society and submit to authority for mutual benefitnull
  • Explains legitimacy of political authority
  • Grounds rights in rational agreement
  • Rawls provides framework for distributive justice
  • Historical fiction (no actual contract was made)
  • Excludes non-rational beings (animals, disabled)
  • May not generate specific policy guidance
nullnullnullnullPrinciples of justice chosen behind a veil of ignorance (not knowing your position in society) would be fair to all
  • Equal basic liberties for all
  • Social and economic inequalities arranged to benefit the least advantaged (difference principle)
nullnullnullnull
The Trolley ProblemnullnullnullnullnullnullnullnullnullnullnullA runaway trolley will kill 5 people. You can pull a lever to divert it, killing 1 person instead. Should you pull the lever?
VariantDescription
Fat ManYou can push a fat man off a bridge to stop the trolley. Is this different from pulling the lever? Why?
Transplant SurgeonA surgeon can kill 1 healthy person to harvest organs and save 5 patients. Is this the same as the trolley case?
Utilitarian
Pull the lever: 1 death < 5 deaths (maximize lives saved)
Deontological
Don't pull: actively killing is morally different from letting die; using someone as a means is wrong
Virtue ethics
What would a wise and compassionate person do in this situation?
Reveals tension between consequentialist and deontological intuitions; used in AI ethics and autonomous vehicle programming

Fields

The shape of this dataset, read from the data itself: every column, its type and a real value. Agents can use this to plan a query without fetching the whole document.

SectionFieldTypeExample
theoriesnamestringUtilitarianism (Consequentialism)
theoriesfoundersarray[3 items]
theoriescore_principlestringMaximize overall happiness/well-being; the righ…
theoriesformulastringChoose action A that maximizes Σ(utility of all…
theoriesstrengthsarray[3 items]
theoriescriticismsarray[3 items]
theoriesvariantsarray[2 items]
theorieskant_formulationsarray[2 items]
theoriesaristotle_virtuesarray[3 items]
theorieseudaimoniastringHuman flourishing; living in accordance with re…
theoriesrawls_veil_of_ignorancestringPrinciples of justice chosen behind a veil of i…
theoriesrawls_principlesarray[2 items]
theoriesscenariostringA runaway trolley will kill 5 people. You can p…
theoriesvariationsarray[2 items]
theoriesethical_analysisobject{utilitarian,deontological,virtue_ethics}
theoriessignificancestringReveals tension between consequentialist and de…

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Topics

  • philosophy
  • ethics
  • moral-philosophy
  • utilitarianism
  • deontology
  • virtue-ethics
  • trolley-problem
  • applied-ethics

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