Punishment
From an eye for an eye to the rehabilitative prison — the long search for why, and how, society should punish.
Each star is a thinker or work; solid lines draw the constellation of a school, dashed threads the passage of ideas between eras.
Select any point on the timeline to read about it.
All entries by era
Punishment 1800 BCE – 2030 CE
From an eye for an eye to the rehabilitative prison — the long search for why, and how, society should punish.
- 1754 BCE
Code of Hammurabi. Babylon's code sets punishment by exact retaliation — 'if a man destroy the eye of another, his eye shall be destroyed'. The lex talionis is harsh, yet by fixing proportion and making the state the punisher, it curbs limitless private vengeance and blood feud.
- 450 BCE
Protagoras (in Plato). In Plato's dialogue, Protagoras argues that a reasonable person punishes not because a wrong was done — for that cannot be undone — but to deter future wrongdoing. It is one of the earliest statements of a forward-looking, deterrent rationale over pure retribution.
- 533 CE
Justinian, Digest. Roman law systematises crime and penalty as matters of public order, graded by intent and status, and administered by the state through defined procedures. Punishment is framed as a considered legal response rather than raw revenge, bequeathing Europe its penal vocabulary.
- 1600 CE
The theatre of the scaffold. Early-modern states punish the body in public — the pillory, branding, drawing and quartering — as a display of sovereign power meant to terrify onlookers. The visible pain of the condemned, not confinement, is the era's chief penal instrument and warning.
- 1764 CE
Cesare Beccaria, On Crimes and Punishments. Beccaria argues that punishment should be swift, certain and proportionate to the harm, not cruel, and condemns torture and the death penalty as ineffective and unjust. His slim book founds modern criminology and inspires the penal reforms of the Enlightenment across Europe.
- 1785 CE
Kant, retributive justice. Against purely deterrent theories, Kant insists punishment must be imposed because the offender deserves it, never merely as a means to social ends. To punish according to desert respects the criminal as a rational agent — the classic modern statement of retributivism.
- 1791 CE
Jeremy Bentham, Panopticon. Bentham designs the Panopticon, a prison whose central tower lets a hidden guard watch every cell, so inmates police themselves. His plan embodies a shift from punishing the body to reforming the soul through constant observation and discipline.
- 1829 CE
The penitentiary. Reformers open institutions like Philadelphia's Eastern State Penitentiary, where solitude, labour and routine are meant to produce penitence and reform. Imprisonment for a fixed term replaces the scaffold as the default punishment of the modern age.
- 1975 CE
Michel Foucault, Discipline and Punish. Foucault reads the shift from public torture to the prison not as simple progress but as a new, subtler technology of power. Disciplinary techniques of surveillance and normalisation, he argues, spread from the prison into schools, factories and hospitals, shaping modern society itself.
- 1990 CE
Restorative justice. Drawing on indigenous practices and thinkers like Howard Zehr, restorative justice reframes crime as harm to relationships to be repaired through dialogue between offender, victim and community. It challenges both retribution and pure deterrence, reviving the ancient question of what punishment is really for.
The milestones
c. 1754 BCE
Code of Hammurabi
An eye for an eye
Babylon's code sets punishment by exact retaliation — 'if a man destroy the eye of another, his eye shall be destroyed'. The lex talionis is harsh, yet by fixing proportion and making the state the punisher, it curbs limitless private vengeance and blood feud.
c. 450 BCE
Protagoras (in Plato)
Punish to deter, not for the past
In Plato's dialogue, Protagoras argues that a reasonable person punishes not because a wrong was done — for that cannot be undone — but to deter future wrongdoing. It is one of the earliest statements of a forward-looking, deterrent rationale over pure retribution.
533 CE
Justinian, Digest
Punishment as public law
Roman law systematises crime and penalty as matters of public order, graded by intent and status, and administered by the state through defined procedures. Punishment is framed as a considered legal response rather than raw revenge, bequeathing Europe its penal vocabulary.
c. 1600 →
The theatre of the scaffold
Punishment as public spectacle
Early-modern states punish the body in public — the pillory, branding, drawing and quartering — as a display of sovereign power meant to terrify onlookers. The visible pain of the condemned, not confinement, is the era's chief penal instrument and warning.
1764
Cesare Beccaria, On Crimes and Punishments
Proportion, certainty, no torture
Beccaria argues that punishment should be swift, certain and proportionate to the harm, not cruel, and condemns torture and the death penalty as ineffective and unjust. His slim book founds modern criminology and inspires the penal reforms of the Enlightenment across Europe.
1785
Kant, retributive justice
Punishment as deserved
Against purely deterrent theories, Kant insists punishment must be imposed because the offender deserves it, never merely as a means to social ends. To punish according to desert respects the criminal as a rational agent — the classic modern statement of retributivism.
1791
Jeremy Bentham, Panopticon
Reform through surveillance
Bentham designs the Panopticon, a prison whose central tower lets a hidden guard watch every cell, so inmates police themselves. His plan embodies a shift from punishing the body to reforming the soul through constant observation and discipline.
1829 →
The penitentiary
Prison as the standard penalty
Reformers open institutions like Philadelphia's Eastern State Penitentiary, where solitude, labour and routine are meant to produce penitence and reform. Imprisonment for a fixed term replaces the scaffold as the default punishment of the modern age.
1975
Michel Foucault, Discipline and Punish
Discipline beyond the prison
Foucault reads the shift from public torture to the prison not as simple progress but as a new, subtler technology of power. Disciplinary techniques of surveillance and normalisation, he argues, spread from the prison into schools, factories and hospitals, shaping modern society itself.
1990 →
Restorative justice
Repair instead of retribution
Drawing on indigenous practices and thinkers like Howard Zehr, restorative justice reframes crime as harm to relationships to be repaired through dialogue between offender, victim and community. It challenges both retribution and pure deterrence, reviving the ancient question of what punishment is really for.