IB Philosophy 7.3 Liberty and Rights Key Definitions

Censorship is the suppression or restriction of speech, publication, or other forms of expression by a government, institution, or other authority, typically justified on grounds of national security, public morality, or social harmony. Mill argued in On Liberty that censorship harms society by silencing potentially true ideas and preventing the refinement of beliefs through open debate, making the free marketplace of ideas essential to human progress.

Cultural imperialism refers to the imposition of one culture's values, norms, or practices onto other cultures, typically by those in positions of global power. Nussbaum responds to this objection by grounding the capabilities list in cross-cultural dialogue rather than any single cultural tradition.

Freedom of information is the right of individuals to access, share, and receive information without unjustified interference from governments or other powerful institutions, recognised as essential to democratic accountability and informed citizenship. The principle underpins transparency laws and press freedoms but must be balanced against legitimate concerns such as privacy, national security, and the prevention of harm.

expression targeting individuals or groups on the basis of race, religion, gender, or sexuality, which may incite hostility or violence. Whether hate speech constitutes "harm" in Mill's sense is one of the most contested questions in contemporary free speech debates.

Legitimacy in political philosophy refers to the moral right of a government to exercise authority and the corresponding obligation of citizens to obey its laws. Theories of legitimacy range from consent-based accounts, which ground authority in the agreement of the governed, to procedural accounts that locate it in fair institutional processes, and substantive accounts that tie it to the government's delivery of justice and the common good.

Liberty in political philosophy refers to the freedom of individuals to act, think, and speak without unnecessary constraint, a concept that Isaiah Berlin influentially divided into negative liberty (freedom from interference) and positive liberty (freedom to realise one's potential). The tension between these two conceptions shapes debates over the proper scope of government, the limits of individual rights, and the conditions required for genuine human flourishing.

Natural rights are rights that individuals possess by virtue of their humanity, prior to and independent of any legal system or political institution. John Locke argued that the rights to life, liberty, and property are natural and inalienable, and a government that violates them forfeits its legitimacy.

Negative liberty is freedom from external interference, being left alone to act without obstacles imposed by others. Positive liberty is the freedom to govern oneself and realise one's true or higher nature. Isaiah Berlin warned that positive liberty can be co-opted to justify coercion in the name of what people supposedly 'really' want.

Negative rights are rights not to be interfered with, requiring others (including the state) to refrain from acting. Positive rights are rights to be provided with something, requiring others to take action such as providing education or healthcare. The distinction is politically significant because positive rights demand resources and redistribution, while negative rights demand only restraint.

Negative liberty is the absence of external constraints or interference by other persons or institutions, so that an individual is free to the extent that no one deliberately blocks their possible courses of action. Championed by Berlin and classical liberals, the concept prioritises non-interference but faces the objection that formal freedom means little to those who lack the resources or capabilities to exercise it.

Positive liberty is the presence of conditions that enable individuals to realise their potential and govern themselves according to their rational will, going beyond mere non-interference to require access to education, health, and political participation. While the concept motivates welfare-state policies and republican self-governance, critics such as Berlin warned that defining freedom as self-mastery can be co-opted by authoritarian regimes claiming to liberate people from their own irrational desires.

The harm principle is John Stuart Mill's central claim in On Liberty (1859) that the only legitimate reason for exercising power over an individual against their will is to prevent harm to others.

The marketplace of ideas is a metaphor derived from Mill's arguments in Chapter II of On Liberty for the process by which truth emerges through open competition among opinions, since suppressing any opinion deprives humanity of the chance to exchange error for truth.