The Anatomy of Revolution is a 1938 book by Crane Brinton outlining the "uniformities" of four major political revolutions: the English Revolution of the 1640s, the American, the French, and the Russian revolutions. Brinton notes how the revolutions followed a life-cycle from the Old Order to a moderate regime to a radical regime, to Thermidorian reaction.

The book has been called "classic,"Research And the Rise of Capitalism; John Schwartz", The Washington Post, March 6, 1994. p. x.07 "famous", and a "watershed in the study of revolution""Over the Hill? The Anatomy of Revolution at Fifty" Torbjørn L. Knutsen and Jennifer L. Bailey, Journal of Peace Research, Vol. 26, No. 4 (Nov., 1989), pp. 421–431 and has been influential enough to have inspired advice given to US President Jimmy Carter by his National Security Advisor Zbigniew Brzezinski during the Iranian Revolution.Later books that used the same title in part include "Cuba: Anatomy of a Revolution" in 1969 by Leo Huberman; Portugal, anatomy of a revolution, London : Chartist Publications, ; Anatomy of a revolution" : the JVP insurrection in Sri Lanka, 1987–1989, by SinhaRaja Tammita-Delgoda; Nehru Memorial Museum and Library. Centre for Contemporary Studies It has been referenced in the well-known text Political Science: An Introduction by Michael G. Roskin et al.

A revised edition was published in 1952, a revised and expanded edition in 1965, and the book remains in print.Crane Brinton, The Anatomy of Revolution, New York, Vintage Books. first ed., 1938; revised ed., 1952; revised and expanded ed., 1965. Brinton summarizes the revolutionary process as moving from "financial breakdown, [to] organization of the discontented to remedy this breakdown … revolutionary demands on the part of these organized discontented, demands which if granted would mean the virtual abdication of those governing, attempted use of force by the government, its failure, and the attainment of power by the revolutionists. These revolutionists have hitherto been acting as an organized and nearly unanimous group, but with the attainment of power it is clear that they are not united. The group which dominates these first stages we call the moderates … power passes by violent … methods from Right to Left" (p. 253).

Themes According to Brinton, while "we must not expect our revolutions to be identical" (p. 226), three of the four (the English, French and Russian) began "in hope and moderation", reached "a crisis in a reign of terror", and ended "in something like dictatorship—Cromwell, Bonaparte, Stalin". The exception is the American Revolution, which "does not quite follow this pattern" (p. 24).

Fall of the old regime The revolutions begin with problems in the pre-revolutionary regime. These include problems functioning—"government deficits, more than usual complaints over taxation, conspicuous governmental favoring of one set of economic interests over another, administrative entanglements and confusions". There are also social problems, such as the feeling by some that careers are not "open to talents", and economic power is separated from political power and social distinction. There is a "loss of self-confidence among many members of the ruling class", the "conversion of many members of that class to the belief that their privileges are unjust or harmful to society" (p. 65). "Intellectuals" switch their allegiance away from the government (p. 251). In short, "the ruling class becomes politically inept" (p. 252).

Financial problems play an important role, as "three of our four revolutions started among people who objected to certain taxes, who organized to protest them …. even in Russia in 1917 the financial problems were real and important" (p. 78).

The revolutions' enemies and supporters disagree over whether plots and manipulation by revolutionists, or the corruption and tyranny of the old regime are responsible for the old regime's fall. Brinton argues both are right, as both the right circumstances and active agitation are necessary for the revolution to succeed (p. 85–86).

At some point in the first stages of the revolutions "there is a point where constituted authority is challenged by illegal acts of revolutionists" and the response of security forces is strikingly unsuccessful. In France in 1789 the "king didn't really try" to subdue riots effectively. In England the king "didn't have enough good soldiers". In Russia "at the critical moment the soldiers refused to march against the people" and instead joined them (p. 88).

Background of the revolutionaries Revolutions "are born of hope" rather than misery (p. 250). Contrary to the belief that revolutionaries are disproportionately poor or down-and-out, "revolutionists are more or less a cross section of common humanity". While revolutionaries "behave in a way we should not expect such people to behave", this can be explained by the "revolutionary environment" rather than their background (p. 120). "'Untouchables' very rarely revolt", and successful slave revolutions, like Haiti's, are few in number (p. 250). Revolutionaries are "not unprosperous" but "feel restraint, cramp, … rather than downright crushing oppression" (p. 250).

Revolutionary regimes In each revolution a short "honeymoon" period follows the fall of the old regime, lasting until the "contradictory elements" among the victorious revolutionaries assert themselves (p. 91). Power then has a tendency "to go from Right to Center to Left" (p. 123). In the process, Brinton says, 'the revolution, like Saturn, devours its children', quoting Pierre Victurnien Vergniaud (p. 121).

Moderates and dual power The revolutions being studied first produce a "legal" moderate government. It vies with a more radical "illegal" government in a process known as "dual power", or as Brinton prefers to call it "dual sovereignty". In England the "Presbyterian moderates in Parliament" were rivals of "the illegal government of the extremist Independents in the New Model Army" (p. 135). In France, the National Assembly was controlled by the "Girondin moderates", while the Montagnard "extremists" controlled "the Jacobin network", "the Paris commune", (p. 136) and the Societies of the Friends of the Constitution (p. 162). In Russia, the moderate provisional government of the Duma clashed with the radical Bolsheviks whose illegal government was a "network of soviets" (p. 136).

The radicals triumph because:

they are "better organized, better staffed, better obeyed" (p. 134), they have "relatively few responsibilities, while the legal government "has to shoulder some of the unpopularity of the government of the old regime" with "the worn-out machinery, the institutions of the old regime" (p. 134). the moderates are hindered by their hesitancy to change direction and fight back against the radical revolutionaries, "with whom they recently stood united", in favor of conservatives, "against whom they have so recently risen" (p. 140). They are drawn to the slogan 'no enemies to the Left' (p. 168). the moderates are attacked on one side by "disgruntled but not yet silenced conservatives, and the confident, aggressive extremists", on the other. The moderate revolutionary policies can please neither side. An example is the Root and Branch Bill in the English Revolution which abolished the episcopacy, angering conservatives and established institutions without earning the loyalty of radicals (pp. 141–143). the moderates "prove poor war leaders" of the wars which accompany the revolutions, unable to "provide the discipline, the enthusiasm", needed (p. 144).

Radicals and "Reigns of Terror and Virtue" In contrast to the moderates, the radicals are aided by a fanatical devotion to their cause, discipline and (in recent revolutions) a study of technique of revolutionary action, obedience to their leadership, ability to ignore contradictions between their rhetoric and action, and drive boldly ahead (pp. 155–160). Even their small numbers are an advantage, giving them "the ability to move swiftly, to make clear and final decisions, to push through to a goal without regard for injured human dispositions" (p. 154).

The radicals took power in Russia with the October Revolution, in France with the purge of the Girondins, in England "Pride's Purge" (p. 163). The American Revolution never had a radical dictatorship and Reign of Terror, "though in the treatment of Loyalists, in the pressure to support the army, in some of the phases of social life, you can discern … many of the phenomena of the Terror as it is seen in our three other societies" (p. 254).

The radical reign is one of "Terror and Virtue". Terror stemming from the abundance of summary executions, foreign and civil war, struggle for power; virtue in the form of puritanical "organized asceticism" and suppression of vices such as drunkenness, gambling and prostitution (p. 180). In its ardor, revolutionary "tragicomedy" touches the average citizen, for whom "politics becomes as real, as pressing, as unavoidable … as food and drink", their "job, and the weather" (p. 177).

On taking power the radicals rule through dictatorship and "rough-and-ready centralization". "The characteristic form of this supreme authority is that of a committee" (p. 171). The Council of State in England, Committee of Public Safety in France.

At some point in these revolutions, the "process of transfer of power from Right to Left ceases", and groups even more radical than those in power are suppressed (p. 167). (In France, the Hébertists are sent to the guillotine (p. 168), in Russia the Kronstadt rebellion is crushed.)

At least in France and Russia, the accession of radicals is also accompanied by a decline in political participation measured in votes cast, as "ordinary, peaceful", "humdrum men and women" favoring moderation find no outlet for their political beliefs (pp. 153–154).

Along with centralization, lethal force in suppression of opposition, rule by committee, radical policies include the spreading of "the gospel of their revolution" to other countries. This is found not only in the Russian and French revolutions, but even seventeenth century England, where Edward Sexby "proposed to the French radicals" in Bordeaux "a republican constitution which was to be called 'L'Accord du Peuple'—an adaptation of the English Agreement of the People" (p. 193). These attempts seldom make a significant impact as the revolutionaries "are usually too poor, and too occupied at home" (p. 213).

"Thermidor" The radical reign of terror, or "crisis" period, is fairly soon replaced by Thermidor period, a period of relaxation from revolutionary policies or "convalescence" from the "fever" of radicalism. Thermidor is named for the period following the fall of Maximilien Robespierre in the French Revolution, in Russia the New Economic Policy of 1921 "can be called Russia's Thermidor" (p. 207), and "perhaps the best date" for that period in England is "Cromwell's dissolution of the Rump" (p. 206).

The Thermidor is characterized by

the "establishment of a 'tyrant'", i.e. "an unconstitutional ruler brought to power by revolution" (p. 207). The "'silken threads' of habit, tradition, legality" having been broken, "men must be held together in society by the 'iron chains' of dictatorship" (p. 208).quoting Guglielmo Ferrero [Ferrero, Guglielmo, 1871–1942, The Principles of Power, translated by Theodore R. Jaeckel, New York, 1942] restoration of many pre-revolutionary ways. In Russia this meant an abandonment of the Bolshevik's avant-garde stance against the institution of the family—formerly disparaged as "a stuffy little nest breeding selfishness, jealousy, love of property, indifference toward the great needs of society" (p. 224). The Bolshevik regime restored roadblocks to divorce (p. 225), laws against homosexuality (p. 226), and moderated its anti-religious, anti-Eastern Orthodox Church stance.