About the author
Roman statesman, orator, and philosopher (106–43 BC), the supreme prose stylist of Latin and a defender of the Roman Republic in its dying decades. Consul, and later a victim of the political violence he opposed, Cicero transmitted Greek philosophy to Rome and to posterity; his political and ethical works profoundly shaped the republican and natural-law traditions.
Synopsis
In a dialogue partly surviving (including the famous 'Dream of Scipio'), Cicero argues that the best constitution mixes monarchy, aristocracy, and democracy, as Rome's did; that a commonwealth exists only where the people are united by agreement on law and a partnership for the common good; and that true law is right reason in accord with nature, eternal and universal, binding on all peoples and rulers alike.
Core passage idea
Paraphrase · Public domainCicero defines a commonwealth as the property of the people — an association united not by any bond but by agreement on justice and a partnership for the common good — and holds that true law is right reason in harmony with nature.
Cicero's definitions — the republic as the people's shared concern, and law as natural reason binding all — transmitted Greek and Stoic ideas to Rome and, through Rome, to the founders of modern republics. His mixed constitution and natural law shaped Western constitutionalism for two millennia.
To avoid a bubble
Pair with Augustine, who in City of God challenged Cicero's definition of the just commonwealth, and with realists like Machiavelli who admired Rome but doubted that justice and virtue, rather than power and fortune, sustain republics.
Reading note
Survives only in part; read what remains together with the 'Dream of Scipio' that closes it. Pair it with Polybius on the mixed constitution and with Cicero's On Duties for his ethics of public life.
Best paired with
Polybius, The Histories; Cicero, On Duties.