THE STATE OF THE MIND
Free Library · Human Intelligence Unit
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Human Intelligence Unit · Free Library

The books that shaped how the world thinks about power, wealth, and the human condition.

These are not the most famous books in their fields. They are the most important ones. Most are freely available because they are old enough to have escaped copyright. That they are old makes them no less urgent.

Total Works
43 Titles
Across 7 categories · grows regularly
Time Range
500 BCE – 1924
Full public domain canon
Access
Free to All
Via Project Gutenberg · no registration
Collection One

Economics

6 works · Smith to Marx
The Wealth of Nations
The Wealth of NationsAdam Smith1776
Adam Smith · 1776

An Inquiry into the Nature and Causes of the Wealth of Nations

The founding text of classical economics; still the most radical case for free markets ever made.

Economics Read Free →
The Theory of the Leisure Class
The Theory of the Leisure ClassThorstein Veblen1899
Thorstein Veblen · 1899

The Theory of the Leisure Class

A mordant dissection of conspicuous consumption and the economic theatre of social status.

Economics Read Free →
The Economic Consequences of the Peace
The Economic Consequences of the PeaceJ.M. Keynes1919
John Maynard Keynes · 1919

The Economic Consequences of the Peace

A prophetic indictment of the Versailles settlement, written weeks after the ink dried.

Economics Read Free →
Progress and Poverty
Progress and PovertyHenry George1879
Henry George · 1879

Progress and Poverty

The most compelling case ever made for land-value taxation — and the book mainstream economics buried.

Economics Read Free →
A Contribution to the Critique of Political Economy
Critique of Political EconomyKarl Marx1859
Karl Marx · 1859

A Contribution to the Critique of Political Economy

The theoretical bridge between Ricardo and Das Kapital; more rigorous and less read than the Manifesto.

Economics Read Free →
The Communist Manifesto
The Communist ManifestoMarx & Engels1848
Marx & Engels · 1848

The Communist Manifesto

Nineteen pages that changed the course of history; the essential counter-text to Adam Smith.

Economics Read Free →
Collection Two

Philosophy

9 works · Plato to Schopenhauer
Meditations
MeditationsMarcus Aureliusc. 180 CE
Marcus Aurelius · c. 180 CE

Meditations

The private notebooks of a Roman emperor — Stoic philosophy at its most personal and unguarded.

Philosophy Read Free →
Beyond Good and Evil
Beyond Good and EvilNietzsche1886
Friedrich Nietzsche · 1886

Beyond Good and Evil

Nietzsche's most sustained and rigorous assault on the foundations of Western morality.

Philosophy Read Free →
Leviathan
LeviathanThomas Hobbes1651
Thomas Hobbes · 1651

Leviathan

The social contract constructed from fear; the most unsettling and honest account of political authority.

Philosophy Read Free →
On Liberty
On LibertyJ.S. Mill1859
John Stuart Mill · 1859

On Liberty

The classical liberal argument for individual freedom; indispensable and still contested two centuries on.

Philosophy Read Free →
An Enquiry Concerning Human Understanding
Enquiry Concerning Human UnderstandingDavid Hume1748
David Hume · 1748

An Enquiry Concerning Human Understanding

The text that woke Kant from his "dogmatic slumber" — a devastating demolition of metaphysics.

Philosophy Read Free →
The Republic
The RepublicPlatoc. 380 BCE
Plato · c. 380 BCE

The Republic

The founding text of Western political philosophy; a dialogue about justice that has never been closed.

Philosophy Read Free →
Nicomachean Ethics
Nicomachean EthicsAristotlec. 350 BCE
Aristotle · c. 350 BCE

Nicomachean Ethics

The basis of all virtue ethics — a systematic inquiry into what it means to live well.

Philosophy Read Free →
Perpetual Peace
Perpetual PeaceImmanuel Kant1795
Immanuel Kant · 1795

Perpetual Peace: A Philosophical Essay

The founding argument for international law, multilateral institutions, and the democratic peace thesis.

Philosophy Read Free →
The World as Will and Idea
The World as Will and IdeaSchopenhauer1818
Arthur Schopenhauer · 1818

The World as Will and Idea

Reality as blind, striving will — the philosophical vision that shaped Nietzsche, Wagner, and Freud.

Philosophy Read Free →
Collection Three

Politics

6 works · Machiavelli to Paine
The Prince
The PrinceMachiavelli1532
Nicolò Machiavelli · 1532

The Prince

Power without illusion — still the most honest and most feared book in the political tradition.

Politics Read Free →
Common Sense
Common SenseThomas Paine1776
Thomas Paine · 1776

Common Sense

The pamphlet that made American independence thinkable; written in six weeks, read by a continent.

Politics Read Free →
The Federalist Papers
The Federalist PapersHamilton, Madison & Jay1788
Hamilton, Madison & Jay · 1788

The Federalist Papers

The architectural drawings of constitutional democracy; indispensable for any serious study of governance.

Politics Read Free →
The Social Contract
The Social ContractRousseau1762
Jean-Jacques Rousseau · 1762

The Social Contract

"Man is born free, and everywhere he is in chains" — the text that gave revolution its vocabulary.

Politics Read Free →
Rights of Man
Rights of ManThomas Paine1791
Thomas Paine · 1791

Rights of Man

The most combative defence of republican government ever written; a direct challenge to monarchical Europe.

Politics Read Free →
Second Treatise of Government
Second Treatise of GovernmentJohn Locke1689
John Locke · 1689

Second Treatise of Government

The liberal case for property, consent, and the right of revolution — the philosophical ground of 1776.

Politics Read Free →
Collection Four

History

6 works · Sun Tzu to Gibbon
The Art of War
The Art of WarSun Tzuc. 500 BCE
Sun Tzu · c. 500 BCE

The Art of War

The oldest systematic text on strategy; still the most concise account of how power works.

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History of the Peloponnesian War
History of the Peloponnesian WarThucydidesc. 400 BCE
Thucydides · c. 400 BCE

History of the Peloponnesian War

The first serious political history — power, hubris, and imperial overreach told from inside.

History Read Free →
The Histories
The HistoriesHerodotusc. 440 BCE
Herodotus · c. 440 BCE

The Histories

Where historical narrative begins: vast, strange, and irreplaceable as a record of the ancient world.

History Read Free →
Narrative of the Life of Frederick Douglass
Narrative of Frederick DouglassFrederick Douglass1845
Frederick Douglass · 1845

Narrative of the Life of Frederick Douglass

First-person testimony from inside American slavery; also the most devastating political document of its era.

History Read Free →
Decline and Fall of the Roman Empire
Decline and Fall of the Roman EmpireGibbon1776
Edward Gibbon · 1776

The History of the Decline and Fall of the Roman Empire

The masterwork of historical prose in English; Gibbon's account of how empires end.

History Read Free →
Anabasis
AnabasisXenophonc. 370 BCE
Xenophon · c. 370 BCE

Anabasis

Ten thousand soldiers stranded in Persia, fighting their way home — the original account of strategic retreat.

History Read Free →
Collection Five

African Studies & Global South

6 works · Equiano to Du Bois
The Souls of Black Folk
The Souls of Black FolkW.E.B. Du Bois1903
W.E.B. Du Bois · 1903

The Souls of Black Folk

The founding text of 20th-century Black political thought; the concept of double consciousness introduced here.

African Studies Read Free →
The Negro
The NegroW.E.B. Du Bois1915
W.E.B. Du Bois · 1915

The Negro

A panoramic history of African peoples across the diaspora; Du Bois at his most sweeping and most polemical.

African Studies Read Free →
The Suppression of the African Slave-Trade
Suppression of the African Slave-TradeW.E.B. Du Bois1896
W.E.B. Du Bois · 1896

The Suppression of the African Slave-Trade to the United States

Du Bois's Harvard doctoral thesis — a meticulous and damning account of how the slave trade was tolerated.

African Studies Read Free →
The Interesting Narrative of Olaudah Equiano
Narrative of Olaudah EquianoOlaudah Equiano1789
Olaudah Equiano · 1789

The Interesting Narrative of the Life of Olaudah Equiano

The transatlantic slave trade told in first person; a founding text of African literature in English.

African Studies Read Free →
Up from Slavery
Up from SlaveryBooker T. Washington1901
Booker T. Washington · 1901

Up from Slavery

The essential counter-voice to Du Bois — pragmatism, self-reliance, and the politics of accommodation.

African Studies Read Free →
Narrative of Sojourner Truth
Narrative of Sojourner TruthSojourner Truth1850
Sojourner Truth · 1850

The Narrative of Sojourner Truth

First-person testimony from a formerly enslaved woman; the voice in the abolitionist canon most often left out.

African Studies Read Free →
Collection Six

Rare & Overlooked

5 works · buried but essential
The Acquisitive Society
The Acquisitive SocietyR.H. Tawney1920
R.H. Tawney · 1920

The Acquisitive Society

A moral indictment of property severed from social function — the book the 20th century should have read more carefully.

Rare & Overlooked Read Free →
Extraordinary Popular Delusions
Extraordinary Popular DelusionsCharles Mackay1841
Charles Mackay · 1841

Memoirs of Extraordinary Popular Delusions and the Madness of Crowds

Every financial bubble, every mass hysteria — documented before modern finance made them normal.

Rare & Overlooked Read Free →
Lombard Street
Lombard StreetWalter Bagehot1873
Walter Bagehot · 1873

Lombard Street: A Description of the Money Market

The founding text of central bank theory; more urgent in the age of quantitative easing than when written.

Rare & Overlooked Read Free →
Women and Economics
Women and EconomicsC.P. Gilman1898
Charlotte Perkins Gilman · 1898

Women and Economics

The political economy of gender, written a century before that vocabulary existed.

Rare & Overlooked Read Free →
An Economic Interpretation of the Constitution
Economic Interpretation of the ConstitutionCharles A. Beard1913
Charles A. Beard · 1913

An Economic Interpretation of the Constitution of the United States

The scandalous argument that the Founders acted from material interest — suppressed, vindicated, still unsettling.

Rare & Overlooked Read Free →
Collection Seven

Society, Mind & Power

5 works · Le Bon to Durkheim
The Crowd
The CrowdGustave Le Bon1895
Gustave Le Bon · 1895

The Crowd: A Study of the Popular Mind

The founding text of mass psychology; the book Mussolini, Hitler, and every political strategist since has read.

Society, Mind & Power Read Free →
Pragmatism
PragmatismWilliam James1907
William James · 1907

Pragmatism

The philosophy of consequences — the most useful American contribution to thought, and the most misunderstood.

Society, Mind & Power Read Free →
The Subjection of Women
The Subjection of WomenJ.S. Mill1869
John Stuart Mill · 1869

The Subjection of Women

The political economy of gender subordination, a century before second-wave feminism gave it a name.

Society, Mind & Power Read Free →
The Elementary Forms of the Religious Life
Elementary Forms of the Religious LifeDurkheim1912
Émile Durkheim · 1912

The Elementary Forms of the Religious Life

How societies manufacture the sacred; the origin of institutional sociology and the study of collective belief.

Society, Mind & Power Read Free →
The Psychology of Revolution
The Psychology of RevolutionGustave Le Bon1913
Gustave Le Bon · 1913

The Psychology of Revolution

Less read than The Crowd, more precise — a forensic account of how revolutions consume themselves.

Society, Mind & Power Read Free →
The State of the Mind · Human Intelligence Unit All texts via Project Gutenberg · Public domain · Free to all