5.2 Origins of Liberal Thought: Smith, Mill, Locke, and Montesquieu

Key Takeaways

  • Social 30-2 outcome 2.5 names Adam Smith and John Stuart Mill when it connects values of liberalism to origins of liberal thought; Locke and Montesquieu are supporting classroom and source figures, not names listed in that outcome.
  • Smith's Wealth of Nations (1776) teaches self-interest, the invisible hand, and limited government as a critique of mercantilist control, not a cartoon of greed with no rules.
  • Mill's On Liberty teaches the harm principle: power may be used against an individual's will only to prevent harm to others, which 30-2 sources use for individual freedom and free discussion.
  • Locke's Two Treatises teach natural rights to life, liberty, and property and government by consent; if government breaks that trust, people may resist.
  • Montesquieu's Spirit of the Laws teaches separation of powers among legislative, executive, and judicial functions so that no one person holds all three.
Last updated: September 2026

Why origin thinkers are a Related Issue 2 tool

Related Issue 2 still asks whether resistance to liberalism is justified. You cannot answer that until you can name the values of liberalism and connect them to origins of liberal thought. On Social Studies 30-2, the Program of Studies outcome that does that naming job — outcome 2.5 — names Adam Smith and John Stuart Mill. That is the pair you must be able to attach to liberal values on command.

Classrooms and diploma-style source items also use John Locke (natural rights, consent, property) and Montesquieu (separation of powers) as supporting origins of liberal democracy. Teach them. Use them on Assignment I key concepts and on Part B matching items. Do not pretend that outcome 2.5 lists them. If a stem asks which thinkers that outcome highlights for the relationship between liberal values and origins of liberal thought, the named pair is Smith and Mill. If a stem shows a three-branch cartoon or a life-liberty-property poster, Locke or Montesquieu may still be the credited match. Those are different questions.

Related Issue 2 typically supplies about 20 to 26 of 60 Part B items. Origin-thinker quotations are a common way into that cluster. Part A Assignment I (about 10 percent of the exam; suggested 250 to 550 words) often wants the key concept liberalism tied to a specific principle — economic freedom, individual rights, limited government — and a named thinker is evidence, not decoration. Assignment II may give you three sources on the role of government; one of them may be a butcher-and-baker paraphrase.

This OpenExamPrep chapter is independent study material covering Social Studies 30-2 topics. Alberta Education and Childcare sets the diploma examination. These pages do not claim official approval, review, or partnership.

Appreciate various perspectives. Smith is not a villain in a factory cartoon until a later chapter puts industrial harms on the table. Mill is not a licence to harm others. Locke is not a treaty. Montesquieu is not a claim that Canada copies the United States. Read the principle the source is using.

ThinkerKey text and datePrinciple to name on 30-2Typical source use
Adam Smith (named in outcome 2.5)The Wealth of Nations, 1776Self-interest in markets; invisible hand; limited government; critique of mercantilismButcher, brewer, baker quotation; cartoon of a minister trying to set every price
John Stuart Mill (named in outcome 2.5)On Liberty, 1859Harm principle; individual freedom; free discussion; fear of tyranny of the majorityCensorship poster versus a speaker defending unpopular opinions
John Locke (supporting classroom / source figure, not listed in 2.5)Two Treatises of Government, 1689Natural rights to life, liberty, and property; government by consent; right to resist tyrannyRights poster; social-contract cartoon; labour mixing with land
Montesquieu (supporting classroom / source figure, not listed in 2.5)The Spirit of the Laws, 1748Separation of powers among legislative, executive, and judicial functionsThree-branch diagram versus a dictator holding a gavel, a sword, and a statute book

Adam Smith: self-interest, the invisible hand, limited government

Adam Smith published An Inquiry into the Nature and Causes of the Wealth of Nations in 1776. 30-2 does not need the whole Scottish Enlightenment. It needs three working tools.

Self-interest. Smith's famous line is that we do not expect dinner from the benevolence of the butcher, the brewer, or the baker, but from their regard to their own interest. The baker wants payment; you want bread; the exchange can leave both better off. On a source item, a speaker who says people produce because they gain, not because a king orders production, is in Smith's stream. That is not the same as saying people are evil. It is a claim about motivation in markets.

Invisible hand. Smith used the image sparingly; 30-2 teaching still uses it because source booklets use it. The invisible hand is the idea that individuals pursuing their own gain in a competitive market can produce social benefits they did not aim at — goods on shelves, jobs, lower prices — without a planner assigning every task. A cartoon of many small trades and a caption about order without a director is usually this idea. A cartoon of a fist crushing a union is not automatically Smith; that may be class conflict for a later chapter.

Limited government. Smith wrote against mercantilism: the habit of governments hoarding bullion, granting monopolies, and micromanaging colonial trade. He wanted limited government, not a fantasy of zero government. He still accepted defence, justice, and some public works. On 30-2, the usable contrast is a state that sets the rules of property and contract versus a state that directs prices, guilds, and production. If a minister in a cartoon is trying to tell every mill what to weave, Smith is the likely critic. If the cartoon is about child labour in an unregulated mill, you are already sliding toward the industrial critique — preview it, then wait for the next chapter's full treatment.

Smith also described the division of labour (the pin factory): breaking work into specialized tasks raises output. That detail sometimes appears as a graph or a workshop drawing. It supports economic liberalism's faith that markets and specialization increase wealth. It does not, by itself, answer whether workers should have unions. Do not steal Chapter 6's class-system story here.

John Stuart Mill: On Liberty and the harm principle

John Stuart Mill published On Liberty in 1859. Outcome 2.5 pairs him with Smith because Mill is the course's named voice for individual freedom as a liberal value, just as Smith is the named voice for economic liberal values.

The harm principle is the sentence to memorize in your own words: the only purpose for which power can be rightfully exercised over a member of a civilized community, against that person's will, is to prevent harm to others. Your own good, physical or moral, is not a sufficient warrant. On a 30-2 booklet, a law that jails people for an unpopular religion, a banned book, or a peaceful eccentric lifestyle is what Mill is attacking. A law that stops a person from poisoning a neighbour's well is what Mill is allowing. The exam question is whether the source is limiting liberty to prevent harm to others or limiting liberty because officials dislike the person.

Mill also feared the tyranny of the majority: even in a democracy, public opinion and legislatures can crush individuality. Free discussion is not a luxury. He treated it as how societies correct errors. A source that says false ideas should be outlawed because they offend the majority is the view Mill opposes. A source that says speech may be limited when it is a direct assault — a true threat, incitement to immediate violence — is closer to a harm-principle boundary. You do not need a law-school test. You need to see whether the speaker's reason is harm to others or we dislike this.

Mill's later writing is more open to some social reform than a cartoon capitalist. 30-2 still uses On Liberty for classical-liberal individual liberty. If a source is clearly about factory inspection, you are not required to force Mill's name onto it. Match the principle in front of you.

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Origin thinkers: outcome 2.5 pair and supporting classroom figures

John Locke: natural rights, consent, and property

John Locke published the Two Treatises of Government in 1689, in the wake of England's Glorious Revolution. Outcome 2.5 does not list him. 30-2 classrooms still teach him because source items still use him, and because classical liberalism's political story is hard to tell without natural rights and consent.

Natural rights. In Locke's picture, people in a state of nature already hold rights to life, liberty, and property. Government does not create those rights; it is supposed to protect them. A 30-2 poster of three words — LIFE, LIBERTY, PROPERTY — under a limited crown is a Locke cue. (Later American phrasing used pursuit of happiness. Canada later used Charter language. Read the source you are given, not a different country's exam.)

Government by consent. Legitimate authority comes from the consent of the governed, not from divine right. People leave the state of nature by agreeing to a political society that will settle disputes through known law. If government becomes tyrannical and breaks the trust — seizing property arbitrarily, destroying liberty — the people may resist. That right of revolution is why Locke shows up when a source asks when resistance to authority is justified. Related Issue 2's key question is larger than Locke, but Locke is one origin of the idea that unjust power may be resisted.

Property. Locke argued that mixing one's labour with land and resources that were treated as unowned creates private property. That argument later travelled with colonial settlement. You already met the clash in Related Issue 1: many Indigenous relationships to land are kinship and responsibility, not labour-mixing title. In this chapter, name Locke's property claim as a classical-liberal origin, then remember section 5.1: treaty and Haudenosaunee land ideas challenge that claim. Do not erase either side.

Locke also matters for limited government: government is a trust, not a parent who owns the people. That is why a dictator who says I am the law is the opposite of Locke even when the dictator uses the word order.

Montesquieu: separation of powers

Montesquieu published The Spirit of the Laws in 1748. He is not named in outcome 2.5. He is a supporting origin of liberal democracy because he gave 30-2 its clean diagram of separated powers.

Montesquieu argued that liberty is safer when legislative, executive, and judicial functions are not piled in one set of hands. Make the law in one place, carry it out in another, judge disputes in a third, and each can check the others. A source showing three buildings labelled MAKE / APPLY / JUDGE, or a cartoon of a ruler wearing a judge's wig, a general's medals, and a lawmaker's sash at once, is this principle. The dictator in section 5.1's released-item contrast is what separation of powers is designed to prevent.

Canada is a parliamentary system: the executive (cabinet) sits inside the legislature, which is not a photocopy of the United States Constitution. 30-2 still uses Montesquieu for the broader liberal-democratic claim that concentrated power is dangerous and that independent courts and known law matter. Do not spend the exam arguing comparative politics trivia unless the source asks for it. Name separation of powers and point to whether one person holds all three functions.

Source-item scenario: a four-quotation cluster

Imagine Assignment II or a Part B booklet with four short sources.

Source I: We expect bread from the baker's interest, not from his kindness.

Source II: Society may stop a person only to prevent harm to others.

Source III: Government is a trust to protect life, liberty, and property; when it becomes a tyrant, consent is broken.

Source IV: When the same man makes the law, enforces it, and judges you, there is no liberty.

Match before you write.

Source I is Smith — self-interest and the market, often taught with the invisible hand.

Source II is Mill — the harm principle.

Source III is Lockenatural rights and consent.

Source IV is Montesquieuseparation of powers.

Trap: calling all four Adam Smith because they are old and European. Trap: saying outcome 2.5 lists all four names. Trap: treating Locke's property sentence as a numbered treaty. For Assignment II you interpret the sources you are given on the role of government or of individuals, then defend a position; you are not required to identify a relationship among three sources, but you still must read each one accurately. For Assignment I, one tight key-concept paragraph that names liberalism and one principle with a thinker is stronger than a list of dates with no source detail.

How to study the four without mixing the labels

Make a four-row card that matches the table: thinker, date, one sentence, one visual. Practise attaching Smith to markets and limited economic direction, Mill to liberty versus harm, Locke to rights and consent, Montesquieu to divided power. Then add a fifth line in your notes: outcome 2.5 names Smith and Mill. That fifth line saves you on the occasional knowledge item that is really an outcome-identification question.

Independent Social Studies 30-2 practice by OpenExamPrep at /practice/ca-ab-diploma-social-30-2 can add retrieval on these labels. It is extra study material, not the provincial form. Each diploma part is developed for 2.5 hours with up to 5 hours allowed; origin-thinker items are usually quick if the labels are clean, which leaves time for the heavier evaluation items later in Related Issue 2.

Publication years of origin texts used on Social 30-2
Test Your Knowledge

On Social Studies 30-2, which statement correctly describes outcome 2.5 and the supporting origin thinkers used in classrooms and source items?

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Test Your Knowledge

A diploma source says we expect our dinner from the baker's regard to personal gain, not from kindness, and a caption adds that order can appear without a director assigning every task. Which origin idea is most clearly illustrated?

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Test Your Knowledge

What does Mill's harm principle, as used on Social 30-2 source items, hold?

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