Our current conception of mathematics as an ideal science, of geometry in particular as dealing with an ideal space, rather than the actual space in which the universe is set, was a notion quite unformulated before Hobbes, and not taken seriously till the middle of the eighteenth century, though it was dimly felt after by a few Aristotelian opponents of Copernicus. Edwin Arthur Burtt, The Metaphysical Foundations of Modern Physical Science

It was not until the Twelfth Century of our era that the Pentateuch as a whole was subjected to rational scrutiny. The man who undertook the ungrateful task was a learned Spanish rabbi, Abraham ben Meir ibn Esra. He unearthed many absurdities, but... it was not until five hundred years later that anything properly describable as scientific criticism... came into being. Its earliest shining lights were the English philosopher Thomas Hobbes, and the Amsterdam Jew, Baruch Spinoza. ..and ever since then the Old Testament has been under searching and devastating examination. H. L. Mencken, Treatise on the Gods

In spite of all these points of similarity, Hobbes is not generally regarded as a liberal political theorist in the full sense of the term. Although his approach is distinctively liberal, his conclusions are not. We have seen that he views freedom as the absence of interference, and so coincides with the liberal position in this regard. In addition, he believes that the erection of government represents an increase of freedom. George Klosko, History of Political Theory: An Introduction: Volume II: Modern (2013), Chap. 2 : Thomas Hobbes

It was supposedly the discovery of mathematics at the age of forty that led Hobbes to attempt to cast all of philosophy on the model of geometry. Douglas M. Jesseph, Squaring the Circle: The War Between Hobbes and Wallis

The irony here is quite remarkable: Hobbes, who would later spend years publishing and defending numerous attempts to square the circle, published his first mathematical work as part of a campaign to silence an old circle squarer. Indeed, less than a decade after his participation in Pell's battle with Longomontanus, Hobbes would find himself involved in a prolonged and bitter controversy that centered on his claims to have squared the circle, and he would go to his grave insisting that he had solved this ancient geometrical problem. Douglas M. Jesseph, Squaring the Circle: The War Between Hobbes and Wallis

The thought has surely occurred to many people throughout the ages: what if there is an afterlife but no god? What if there is a god but no afterlife? As far as I know, the clearest writer to give expression to this problem was Thomas Hobbes in his 1651 masterwork Leviathan. I strongly recommend that you read part III, chapter 38, and part IV, chapter 44, for yourselves, because Hobbe's command of both holy scripture and the English language is quite breathtaking. He also reminds us of how perilous it was, and always has been, even to think about these things. ...Having planted the subversive thought-that forbidding Adam to eat from one tree lest he die and from another lest he live forever, is absurd and contradictory... he acknowledged the process by which people are always free to make up a religion that suits or gratifies or flatters them. Christopher Hitchens, God Is Not Great Hachette Digital, Inc.

Although longer experience may have lent some older members of these bands some authority, it was mainly shared aims and perceptions that coordinated the activities of their members. These modes of coordination depended decisively on instincts of solidarity and altruism - instincts applying to the members of one's own group but not to others. The members of these small groups could thus exist only as such: an isolated man would soon have been a dead man. The primitive individualism described by Thomas Hobbes is hence a myth. The savage is not solitary, and his instinct is collectivist. There was never a 'war of all against all'. Friedrich Hayek, The Fatal Conceit (1988), Ch. 1 : Between Instinct and Reason

The great thinker from whom the basic ideas of what we shall call constructivist rationalism received their most complete expression was René Descartes. But while he refrained from drawing the conclusions from them for social and moral arguments, these were mainly elaborated by his slightly older (but much more long-lived) contemporary, Thomas Hobbes. Although Descartes' immediate concern was to establish criteria for the truth of propositions, these were inevitably also applied by his followers to judge the appropriateness and justification of actions. Friedrich Hayek, Law, Legislation and Liberty, Vol. 1 : Rules and Order (1973), Ch. 1 : Reason and Evolution

Both his works [De Cive and Leviathan] were condemned by Parliament, and "Hobbism" became, ere he died, a popular synonym for irreligion and immorality. ...Hobbes was the first great English writer who dealt with the science of government from the ground, not of tradition, but of reason. ...Hobbes ...denied the existence of the more spiritual sides of man's nature. His hard and narrow logic dissected every human custom and desire, and reduced even the most sacred to demonstrations of a prudent selfishness. Friendship was simply a sense of social utility to one another. ...Nothing better illustrates the daring with which the new skepticism was to break through the theological traditions of the older world than the pitiless logic with which Hobbes assailed the very theory of revelation. John Richard Green, History of the English People, Vol.3

Thomas Hobbes was the first sociobiologist, two hundred years before Darwin. Daniel Dennett, Darwin's Dangerous Idea, p. 453

Perhaps the most influential book ever written on the characteristics of men in politics is The Prince, by the great Renaissance Italian Nicolo Machiavelli (1469-1527). Despite its enduring popularity, fascination, and authority it is extremely one-sided and unsystematic. ... More systematic in its treatment of political man than The Prince, though about equally one-sided, is Hobbes' first section of The Leviathan entitled "Of Man." Hobbes' psychological assumptions bear a remarkable resemblance to the modern school of psychology often called Behaviorism. Robert A. Dahl, Modern Political Analysis (1963), p. 113

I have seen a translation by Hobbes, which I prefer for its greater clumsiness. Many years have passed since I saw it, but it made me laugh immoderately. Poetry that is not good can only make amends for that deficiency by being ridiculous... William Cowper, of Hobbes's translation of Homer, in a letter to Thomas Park (July 15, 1793), published in The Works of William Cowper: His Life and Letters by William Hayley, ed. T. S. Grimshawe, Vol. V (1835), p. 161

There are, it is true, masterpieces of political philosophy in the English language: Hobbes' Leviathan is an obvious example. But the true character of this debate has been empirical: the discussion of particular and practical issues, in the course of which a clash of principle and attitude is brought out, but in which the element of abstract thought is always kept in relation to an immediate and actual situation. Alan Bullock and Maurice Shock, The Liberal Tradition from Fox to Keynes (1956), "General Preface"

The pervasiveness of social dilemmas has repeatedly been recognized in the great books of political philosophy. Hobbes described such a setting as a "war of all against all." Rousseau used a stag hunt to illustrate the problem of a group needing to all work together to hunt a large animal but facing the temptation to break up into separate groups when small animals appeared on the scene that were easy to catch. A small group could catch a rabbit, but ruined the chance for the group to obtain a large animal. Elinor Ostrom, Understanding Institutional Diversity (2005), Ch. 2 : Zooming In and Linking Action Situations

[I]n the past two decades anthropologists have gathered data on life and death in pre-state societies rather than accepting the warm and fuzzy stereotypes. What did they find? In a nutshell: Hobbes was right, Rousseau was wrong. Steven Pinker, The Blank Slate (2002), p. 95

Swift had read Hobbes, an experience not easily forgotten. Will Durant and Ariel Durant. The Story of Civilization, VIII The Age of Louis XIV

Thomas Hobbes has always been thought of as the arch materialist, the first man to uphold go-getting as a creed. But that is a travesty of Hobbes's opinion. He was a go-getter in a sense, but it was the going, not the getting he extolled. The race had no finishing post as Hobbes conceived it. The great thing about the race was to be in it, to be a contestant in the attempt to make the world a better place, and it was a spiritual death he had in mind when he said that to forsake the course is to die. 'There is no such thing as perpetual tranquility of mind while we live here,' he told us in Leviathan, 'because life itself is but a motion and can never be without desire, or without fear, no more than without sense'; 'there can be no contentment but in proceeding.' I agree. Peter Medawar, The Effecting of All Things Possible

Wants and possessions might have standards and limits, but pride makes property the instrument for satisfying the lust for power and social superiority. More is already on the way to an analysis of pride that was later continued by Hobbes for the case of religious election as the instrument of satisfying pride. And More, like Hobbes, despairs of finding the cure for the diseased souls in a reawakening of the life of the spirit. Hobbes devised the Leviathan as the external power that will repress the proud by force; and More devises the propertyless society as the external, institutional measure that will have to substitute for the cure of the souls. It is perhaps not needless to stress that the conception of this remedy is as un-Platonic as anything can be. Eric Voegelin, "More's Utopia"

At the age of forty he was, for the first time, introduced to the works of Euclid, and at once 'fell in love with geometry,' being attracted, he says, more by the rigorous manner of proof employed than by the matter of the science. (Mathematics... were then only beginning to be seriously studied in England. Hobbes tells us that in his undergraduate days geometry was still looked upon generally as a form of the 'Black Art,' and it was not until 1619 that the will of Sir Henry Savile, Warden of Merton College, established the first Professorships of Geometry and Astronomy at Oxford.) Alfred Edward Taylor, Thomas Hobbes

Foremost among his friends stands Francis Bacon, who 'loved to converse with him,' and employed him on the translation of some of the famous Essays... into Latin. This connection can be shown to belong to the years 1621-6 when Bacon, after his political disgrace, was devoting himself entirely to scientific work... The influence of Bacon, however, has left no trace on Hobbes's own matured thought. He... has no place for 'Baconian induction' in his own conception of scientific method. Bacon's zeal for experiment, the redeeming feature in an otherwise chaotic scheme of thought, is entirely alien to the essentially deductive and systematic spirit of the Hobbian philosophy. Alfred Edward Taylor, Thomas Hobbes

The first-fruits of... renewed interest in learning was an English translation of Thucydides, published in 1628-9, for the purpose, as Hobbes said at the time, of educating his readers in the true principles of statesmanship. Afterwards, when his absolutist political theories had been fully developed, he wished it to be believed that his real object had been to warn Englishmen against the dangers of democracy, by showing them how much wiser a single great statesman is than a multitude. Alfred Edward Taylor, Thomas Hobbes

When Hobbes referred to the dire state of human beings in having 'nasty, brutish and short' lives, he also pointed, in the same sentence, to the disturbing adversity of being 'solitary'. Escape from isolation may not only be important for the quality of human life, it can also contribute powerfully to understanding and responding to the other deprivations from which human beings suffer. There is surely a basic strength here which is complementary to the engagement in which theories of justice are involved. Amartya Sen, The Idea of Justice, 2009; Ch. 18. Justice and the World

Hobbes himself had experienced this truth in the terrible times of civil war, because then all legitimate and normative illusions with which men like to deceive themselves regarding political realities in periods of untroubled security vanish. If within the state there are organized parties capable of according their members more protection than the state, then the latter becomes at best an annex of such parties, and the individual citizen knows whom he has to obey. Carl Schmitt, The Concept of the Political

It is a remarkable fact that, in a history extending over nearly twenty-five hundred years, a considerable part of the most significant writing on political philosophy was done in two periods of only about fifty years each and in two places of quite restricted area. ... The Second place was England, and the period was the half century between 1640 and 1690, which produced the works of Hobbes and Locke, together with the works of a host of lesser figures. George Sabine, "What is a Political Theory?"

The reasoning of Caligula agrees with that of Hobbes and Grotius. Jean-Jacques Rousseau, The Social Contract, I Ch.2

The study of politics is a form of natural history. Thomas Hobbes loathed Aristotle's politics, and in Leviathan followed Plato in modeling politics on geometry; but he admired Aristotle's biology. One consequence of that "biological" style is important, not only because it was at odds with Hobbes's-and Plato's-hankering after political geometry. Aristotle claimed that political analysis should aim only "at as much precision as the subject matter permits." Political wisdom cannot aspire to the precision of geometry, and must not pretend to. Aboriculture suggests an analogy: most trees grow best in firm soil with a moderate water supply; a few thrive with their roots in mud and water. Alan Ryan, On Politics: A History of Political Thought: From Herodotus to the Present (2012), Ch. 3 : Aristotle: Politics Is Not Philosophy

Hobbes's Leviathan is the greatest single work of political thought in the English language. John Rawls, Lectures on the History of Political Philosophy, p. 1

There are several passages in Hobbes's translation of Homer, which, if they had been writ on purpose to ridicule that poet, would have done very well. Alexander Pope, as quoted in Observations, Anecdotes, and Characters, of Books and Men (1820) by Joseph Spence, p. 285

As for [...] Of all passions, that which inclineth men least to break the laws is fear.

Another doctrine repugnant to Civill Society, is that whatsoever a man does against his Conscience, is Sinne; and it dependeth on the presumption of making himself judge of Good and Evill. For a man's Conscience and his Judgement are the same thing, and as the Judgement, so also the Conscience may be erroneous.

As also the great number of Corporations; which are as it were many lesser Common-wealths in the bowels of a greater, like wormes in the entrayles of a natural man.

The office of the sovereign, be it a monarch or an assembly, consisteth in the end for which he was trusted with the sovereign power, namely the procuration of the safety of the people, to which he is obliged by the law of nature, and to render an account thereof to God, the Author of that law, and to none but Him. But by safety here is not meant a bare preservation, but also all other contentments of life, which every man by lawful industry, without danger or hurt to the Commonwealth, shall acquire to himself. And this is intended should be done, not by care applied to individuals, further than their protection from injuries when they shall complain; but by a general providence, contained in public instruction, both of doctrine and example; and in the making and executing of good laws to which individual persons may apply their own cases.

Fact be vertuous, or vicious, as Fortune pleaseth.

The source of every Crime, is some defect of the Understanding; or some error in Reasoning, or some sudden force of the Passions. Defect in the Understanding, is Ignorance; in Reasoning, Erroneous Opinion.

So that every Crime is a sinne; but not every sinne a Crime.

No man's error becomes his own Law; nor obliges him to persist in it.

The Interpretation of the Laws of Nature in a Common-wealth, dependeth not on the books of Moral Philosophy. The Authority of writers, without the Authority of the Commonwealth, maketh not their opinions Law, be they never so true.

Science is the knowledge of Consequences, and dependence of one fact upon another: by which, out of that we can presently do, we know how to do something else when we will, or the like, another time.

Time, and Industry, produce everyday new knowledge. The Second Part, Chapter 30, p. 176

And whereas many men, by accident unevitable, become unable to maintain themselves by their labour; they ought not to be left to the Charity of private persons; but to be provided for, (as far-forth as the necessities of Nature require,) by the Lawes of the Common-wealth. For as it is Unchariablenesse in any man, to neglect the impotent; so it is in the Soveraign of a Common-wealth, to expose them to the hazard of such uncertain Charity. The Second Part, Chapter 30, p. 181

And when all the world is overcharged with Inhabitants, then the last remedy of all is Warre, which provideth for every man, by Victory or Death. The Second Part, Chapter 30, p. 181

He was... 40 years old before he looked upon geometry; which happened accidentally. Being in a gentleman's library..., Euclid's Elements lay open, and 'twas the 47 El. libri I. He read the proposition. 'By G-,' sayd he (he would now and then sweare, by way of emphasis), 'this is impossible!' So he reads the demonstration of it, which referred him back to such a proposition, which proposition he read. That referred him back to another, which he also read. Et sic deinceps, that at last was demonstrably convinced of the truth. This made him in love with geometry. John Aubrey, A Brief Life of Thomas Hobbes, 1588-1679 (1898) as quoted by Stephen J. Finn, Thomas Hobbes and the Politics of Natural Philosophy

He was beloved by his lordship [Francis Bacon]... who was wont to have him walk in his delicate groves, where he did meditate; and when a notion darted into his mind, Mr. Hobbes was presently to write it down. And his Lordship was wont to say that he did it better than any one else about him; for that many times when he read their notes he scarce understood what they writ, because they understood it not clearly themselves. John Aubrey, as quoted by John Richard Green, History of the English People, Vol.3 (1887) describing Hobbes' secretarial abilities under Bacon

The purpose of the Leviathan was to expand the basis of human government; in the course of his discussion Hobbes raised many detailed questions about the books of the Bible. In this way he participated in the development of critical Bible study. Albert Edwin Avey, Handbook in the History of Philosophy. New York: Barnes & Noble. 1954. p. 133.

For such Truth as opposeth no man's profit nor pleasure is to all men welcome. Review and Conclusion, p. 396, (Last text line)

But if it bee well considered, The praise of Ancient Authors, proceeds not from the reverence of the Dead, but from the competition and mutual envy of the Living. Review and Conclusion, p. 395

For it is not the bare Words, but the Scope of the writer that giveth true light, by which any writing is to bee interpreted; and they that insist upon single Texts, without considering the main Designe, can derive no thing from them clearly; but rather by casting atomes of Scripture, as dust before mens eyes, make everything more obscure than it is; an ordinary artifice of those who seek not the truth, but their own advantage. The Third Part, Chapter 43, p. 331

Christian Kings may erre in deducing a Consequence, but who shall Judge? The Third Part, Chapter 43, p. 330

Power as is really divided, and as dangerously to all purposes, by sharing with another an Indirect Power, as a Direct one. The Third Part, Chapter 42, p. 315

And hereby it comes to passe, that Intemperance, is naturally punished with Diseases; Rashness, with Mischance; Injustice; with Violence of Enemies; Pride, with Ruine; Cowardice, with Oppression; Negligent government of Princes, with Rebellion; and Rebellion with Slaughter. The Second Part, Chapter 31, p. 194