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April 10, 2026
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"Said the great and magnanimous Laplace: 'It is India that gave us the ingenious method of expressing all numbers by ten symbols, each receiving a value of position as well as an absolute value; a profound and important idea which appears so simple to us now that we ignore its true merit. But its very simplicity, the great ease which it has lent to all computations, puts our arithmetic in the first rank of useful inventions; and we shall appreciate the grandeur of this achievement the more when we remember that it escaped the genius of Archimedes and Apollonius, two of the greatest men produced by antiquity.'"
""Les questions les plus importantes de la vie ne sont en effet, pour la plupart, que des problèmes de probabilité." Théorie analytique des probabilités, 1812."
"Wikipedia recounts research about this much-cited episode."
"Lagrange, also present (or to whom Napoleon repeated Laplace's reply, in another version), then commented: "Ah ! C’est une belle hypothèse; ça explique beaucoup de choses.""
"[Sire,] je n'avais pas besoin de cette hypothèse-là ."
"Comment, vous faites tout le système du monde, vous donnez les lois de toute la création et dans tout votre livre vous ne parlez pas une seule fois de l'existence de Dieu !"
"On voit, par cet Essai, que la théorie des probabilités n'est, au fond, que le bon sens réduit au calcul; elle fait apprécier avec exactitude ce que les esprits justes sentent par une sorte d'instinct, sans qu'ils puissent souvent s'en rendre compte."
"The exchange is reported by Victor Hugo (who in turn was citing François Arago) as:"
"[Sire,] je n'ai pas eu besoin de cette hypothèse."
"With respect to the cohesion and of liquids, I have had the good fortune to anticipate Mr. Laplace in his late researches, and I have endeavoured to show, that my assumptions are more universally applicable to the facts, than those which that justly celebrated mathematician has employed."
"Laplace had taken Newton's science and turned it into philosophy. The universe was a piece of machinery, its history was predetermined, there was no room for chance or for free will. The cosmos was indeed an ice-cold clock."
"This is another important dispute in the history of how we think about being wrong: whether error represents an obstacle in the path toward truth, or the path itself. The former idea is a conventional one. The latter... emerged during the Scientific Revolution and continued to evolve throughout the Enlightenment. But it didn't really reach its zenith until the early nineteenth century, when... Pierre Simon Laplace refined the distribution of errors, illustrated by the now-familiar bell curve. ...Laplace used the bell curve to determine the precise orbit of the planets. ...By using the normal distribution to graph... individually imperfect data points, Laplace was able to generate a far more precise picture of the galaxy. ...aggregate enough flawed data, and you get a glimpse of the truth."
"Laplace created a number of new mathematical methods that were subsequently expanded into branches of mathematics, but he never cared for mathematics except as it helped him to study nature."
"Laplace made many important discoveries in mathematical physics... Indeed, he was interested in anything that helped to interpret nature. He worked on hydrodynamics, the wave propagation of sound, and the tides. In the field of chemistry, his work on the liquid state of matter is classic. His studies of the tension in the surface layer of water, which accounts for the rise of liquids inside a capillary tube, and of the cohesive forces in liquids, are fundamental. Laplace and Lavoisier designed an ice calorimeter (1784) to measure heat and measured the specific heat of numerous substances; heat, to them, was still a special kind of matter. Most of Laplace's life was, however, devoted to celestial mechanics."
"Whenever I meet in La Place with the words "Thus it plainly appears," I am sure that hours, and perhaps days, of hard study will alone enable me to discover how it plainly appears."
"It is to the influence of the opinion of those whom the multitude [the populous] judges best informed, and to whom it has been accustomed to give its confidence in regard to the most important matters of life, that the propagation of those errors is due, which in times of ignorance, have covered the face of the earth. Magic and astrology offer us two great examples. These errors... having for a basis only universal credence, have maintained themselves during a very long time; but at last the progress of science has destroyed them in the minds of enlightened men, whose opinion consequently has caused them to disappear... through the power of imitation and habit which had so generally spread them... This power, the richest resource of the moral world, establishes and conserves in a whole nation ideas entirely contrary to those... elsewhere... What indulgence ought we not then to have for opinions different from ours, when this difference often depends only upon the various points of view where circumstances have placed us! Let us enlighten those whom we judge insufficiently instructed; but first let us examine critically our own opinions, and weigh with impartiality, their respective probabilities."
"The theory of chance consists in reducing all the events of the same kind to a certain number of cases equally possible, that is to say, to such as we may be equally undecided about in regard to their existence, and in determining the number of cases favorable to the event whose probability is sought."
"Let us recall that formerly, and at no remote epoch... all the unusual phenomena were regarded as so many signs of celestial wrath."
"When a nation has been forced to resort to the right of insurrection, it returns to the state of nature in relation to the tyrant. How can the tyrant invoke the state of nature in relation to the tyrant. How can the tyrant invoke the social pact? He has annihilated it. The nation can still keep it, if it thinks fit, for everything conserving relations between citizens; but the effect of tyranny and insurrection is to break it entirely where the tyrant is concerned; it places them reciprocally in a state of war. Courts and legal proceeding are only for members of the same side."
"To hear Robespierre, he is the only defender of liberty; he is giving up for lost, he is going to quit everything; he is a man of rare modesty (laughter), and he has a perpetual refrain: "I am oppressed; they won't give me the floor"; and he is the only one with anything useful to say, for his will is always done. He says: "So-and-so conspires against me, I who am the best friend of the Republic; therefore he conspires against the Republic." That is novel."
"It would be easy to say that the Jacobins were in love with power or that Robespierre established a personal dictatorship. The first statement would be partly true, the second mostly false; neither would really explain what happened."
"So long as the French Revolution is regarded, not as ‘the suicide of the eighteenth century,’ but as the birth of ideas that enlighten the nineteenth, and of hopes that still inspire our own age; and so long as its leaders are sanely judged, with due allowance for the terrible difficulties of their task; so long will Robespierre, who lived and died for the Revolution, remain one of the great figures of history"
"Robespierre I find difficult to admire. It is impossible to find real greatness in him, yet, because of his passionate faith in the principles of the revolution, he was perhaps its representative man. He was never more than the outstanding speaker of Jacobinism, not the creator of Jacobin policy. He was however the only politician ever known in any country to be called by everyone 'The Incorruptible'. Perhaps this quality was more surprising in France than in some other countries. Robespierre was incorruptible over money. He was corrupted by power. He had spoken against power. He had preached democracy. When he joined the Committee of Public Safety, he abandoned his principles."
"Robespierre was quite incapable of separating the personal element from differences of opinion. That every polemical argument became in Robespierre's mouth a torrent of personal denunciation may be explained by his implicit conviction that as there is only one truth, he who disagreed with it was prompted by evil motives. But less explicable seems Robespierre's habit of declaring himself a victim of persecution, of embarking upon a dirge of self-pity and of invoking death as solace, every time he was opposed. Here we are faced with a paranoiac streak, a strange combination of a most intense and mystical sense of mission with a self-pity that expressed itself in an obsessive preoccupation with martyrdom, death and even suicide. It is the psychology of the neurotic egoist, who must impose his will—rationalized into divine truth—or wallow in an ecstasy of self-pity."
"You who supports the tottering country against the torrent of despotism and intrigue, you whom I only know, like God, through his miracles... I do not know you, but you are a great man. You are not only the deputy of a province, you are one of humanity and of the Republic."
"Robespierre was by no means the worst character who figured in the Revolution. He was a fanatic, a monster, but he was incorruptible, and incapable of robbing, or causing the deaths of others, either from personal enmity, or a desire of enriching himself. He was an enthusiast; but one who really believed that he was acting right, and died not worth a sou."
"This man will go far, because he believes everything he says."
"Some see Robespierre as one of the founding fathers of social democracy, his revolutionary excesses occasioned by his championing the cause of the people. Many more though view him as a brutal dictator who manipulated the Parisian mob for his own ends — a hypocritical despot whose terror was the precursor of the totalitarian butchery of Hitler and Stalin in modern times."
"Robespierre was the first prototype for the modern European dictator: his sanctimonious vision of republican virtue and terror, and the brutal slaughter he unleashed in its name, were studied reverently by the Russian Bolsheviks and helped inspire the totalitarian mass-killings of the 20th century. Known as ‘the Sea-green Incorruptible’, his name has become a byword for the fatal purity and degenerate corruption of the ‘Reign of Terror’ which followed the French Revolution of 1789 and climaxed with the execution of King Louis XVI on 21 January 1793. The Terror illustrated not only the corrupt dangers of utopian monopolies of ‘virtue’, but how ultimately such witch hunts consume their own children."
"Robespierre is certainly the most tragic subject which history offers, but also the most comic. Shakespeare has nothing like this."
"As a judge, history also undermines the claims of leaders to omniscience. Dictators, perhaps because they know their own lies so well, have usually realized the power of history. Consequently, they have tried to rewrite, deny, or destroy the past. Robespierre in revolutionary France and Pol Pot in 1970s Cambodia each set out to start society from the beginning again. Robespierre’s new calendar and Pol Pot’s Year Zero were designed to erase the past and its suggestions that there were alternative ways of organizing society. The founder of China, the Qin Emperor, reportedly destroyed all the earlier histories, buried the scholars who might remember them, and wrote his own history. Successive dynasties were not as brutal but they, too, wrote their own histories of China’s past. Mao went one better: He tried to destroy all memories and all artifacts that, by reminding the Chinese people of the past, might prevent him from remodelling them into the new Communist men and women."
"He was never well-informed. He had forgotten all his sterile college studies and what he picked up during his legal practice. In working for the prize essays offered by provincial academies, he had acquired some ideas which were philanthropical rather than philosophical. That was the extent of his knowledge. He never had the faintest idea about government, administration and diplomacy."
"rather than thinking of Robespierre as the man who ruined the revolution, we should see him as a man that the revolution ruined."
"He was the last word of the Revolution, but nobody could read it"
"There are two ways of totally misunderstanding Robespierre as a historical figure: one is to detest the man, the other is to make too much of him. It is absurd, of course, to see the lawyer from Arras as a monstrous usurper, the recluse as a demagogue, the moderate as a bloodthirsty tyrant, the democrat as a dictator. On the other hand, what is explained about his destiny once it is proved that he really was the Incorruptible? The misconception common to both schools arises from the fact that they attribute to the psychological traits of the man the historical role into which he was thrust by events and the language he borrowed from them. Robespierre is an immortal figure not because he reigned supreme over the Revolution for a few months, but because he was the mouthpiece of its purest and most tragic discourse."
"You will follow us soon! Your house will be beaten down and salt sown in the place where it stood!"
"He is above all, a tenacious man"
"[Robespierre] couldn't even boil an egg."
"The whole corpus of Robespierre studies is a hall of mirrors"
"Of no one of whom so much has been written is so little known"
"One wonders why there are so many women who follow Robespierre to his home, to the Jacobins, to the Cordeliers and to the Convention. It is because the French Revolution is a religion and Robespierre is one of its sects. He is a priest with his flock… Robespierre preaches, Robespierre censures, he is furious, serious, melancholic and exalted with passion. He thunders against the rich and the great. He lives on little and has no physical needs. He has only one mission: to talk. And he talks all the time."
"The seagreen Incorruptible."
"No one at the time of the Revolution, went as far as Robespierre in stating what were later to be recognized as the essential conditions of the democratic state. His draft Declaration of Rights, stands out above the Revolutionary talk like a beacon. It illuminates the Revolution and it explains the greatness of Robespierre. Universal franchise, equality of rights regardless of race or religion, pay for public service to enable rich and poor alike to hold office, publicity for legislative debates, a national system of education, the use of taxation to smooth out economic inequalities, recognition of the economic responsibilities of society to the individual, the right of national autonomy, religious liberty, local self-government - such were the some of the principles for which he stood, and which are now taken for granted in democratic societies."
"We did not realize that in killing Robespierre, we would kill the Republic"
"we were wrong that day [Thermidor] if someone were to ask me how [Robespierre] succeeded in taking so much ascendancy over public opinion I would answer that it was by displaying the most austere virtues, the most absolute devotion, the purest principles."
"I have the double regret — I should say the double remorse — of having overthrown Robespierre on the 9th of Thermidor and raised Bonaparte on the 13th of Vendemiaire."
"[Robespierre was] a man without personal ambition, a republican to the fingertips...would to Heaven there were in the Chamber of Deputies today someone to point to those who conspire against our freedom! We were then in the middle of a war, and we did not understand the man. He was a nervous, choleric individual who twitched when he spoke. He was a great man and posterity will not refuse him the title."
"I confess today in good faith that I am angry with myself for having formerly seen in a bad light, within the revolutionary government, Robespierre and Saint-Just. I believe that these two men were better on their own than all the revolutionaries together."
"We shall distinguish in Robespierre two men, apostle of liberty, and Robespierre the most infamous of tyrants."
"He is and will be a lawyer only for the poor."