WIST Quotations

Heinlein, Robert A. -- Essay (1952-10), “Concerning Stories Never Written,” Revolt in 2100, Postscript (1953)

Dave — Tue, 26 May 2026 17:42:24 +0000

There is a latent deep strain of religious fanaticism in this, our culture; it is rooted in our history and it has broken out many times in the past. It is with us now; there has been a sharp rise in strongly evangelical sects in this country in recent years, some of which hold beliefs theocratic in the extreme, anti-intellectual, anti-scientific, and anti-libertrarian.

Robert A. Heinlein (1907-1988) American writer
Essay (1952-10), “Concerning Stories Never Written,” Revolt in 2100, Postscript (1953)
(Source)

Adams, John -- Letter (1816-02-02) to Thomas Jefferson

Dave — Mon, 27 Apr 2026 22:20:23 +0000

We must come to the Principles of Jesus. But, when will all Men and all Nations do as they would be done by? Forgive all Injuries and love their Enemies as themselves? I leave those profound Phylosophers whose Sagacity perceives the Perfectibility of Humane Nature, and those illuminated Theologians who expect the Apocalyptic Reign, to enjoy their transporting hopes; provided always that they will not engage us in Crusades and French Revolutions, nor burn us for doubting.

John Adams (1735–1826) American lawyer, Founding Father, statesman, US President (1797–1801)
Letter (1816-02-02) to Thomas Jefferson
(Source)

Currie, James -- Letter (1791-07) to Joseph Priestley for the Liverpool Dissenters (draft)

Dave — Thu, 20 Nov 2025 04:48:19 +0000

We were not aware that there existed in the midst of our own Country, and in the present day, a spirit of fanaticism, so base, so wicked & so bloody, as to brake forth into a frenzy of unprovoked violence, not only against the most respectable characters, but against knowledge & science themselves.

James Currie (1756-1805) Scottish physician, biographer
Letter (1791-07) to Joseph Priestley for the Liverpool Dissenters (draft)
(Source)

Following the burning of Priestley's house by a Birmingham mob, which destroyed many of the scientist's papers and experiments. Found in the Currie Papers, No. 58, Liverpool Public Libraries.

Colton, Charles Caleb -- Lacon: Or, Many Things in Few Words, Vol. 1, § 222 (1820)

Dave — Sat, 25 Jan 2025 02:30:55 +0000

There is no cruelty so inexorable and unrelenting, as that which proceeds from a bigoted and presumptuous supposition of doing service to God. Under the influence of such hallucination, all common modes of reasoning are perverted, and all general principles are destroyed.

Charles Caleb "C. C." Colton (1780-1832) English cleric, writer, aphorist
Lacon: Or, Many Things in Few Words, Vol. 1, § 222 (1820)
(Source)

Roosevelt, Theodore -- Speech (1910-04-23), “Citizenship in a Republic [The Man in the Arena],” Sorbonne, Paris

Dave — Thu, 23 Jan 2025 21:14:25 +0000

In a republic, to be successful we must learn to combine intensity of conviction with a broad tolerance of difference of conviction. Wide differences of opinion in matters of religious, political, and social belief must exist if conscience and intellect alike are not to be stunted, if there is to be room for healthy growth. Bitter internecine hatreds, based on such differences, are signs not of earnestness of belief but of that fanaticism which, whether religious or anti-religious, democratic or anti-democratic, is itself but a manifestation of the gloomy bigotry which has been the chief factor in the downfall of so many, many nations.

Theodore Roosevelt (1858–1919) American politician, statesman, conservationist, writer, US President (1901–1909)
Speech (1910-04-23), “Citizenship in a Republic [The Man in the Arena],” Sorbonne, Paris
(Source)

Russell, Bertrand -- “Philosophy for Laymen,” Universities Quarterly (1946-11)

Dave — Thu, 06 Jun 2024 13:16:33 +0000

But so long as men are not trained to withhold judgment in the absence of evidence, they will be led astray by cocksure prophets, and it is likely that their leaders will be either ignorant fanatics or dishonest charlatans. To endure uncertainty is difficult, but so are most of the other virtues. For the learning of every virtue there is an appropriate discipline, and for the learning of suspended judgment the best discipline is philosophy.

Bertrand Russell (1872-1970) English mathematician and philosopher
“Philosophy for Laymen,” Universities Quarterly (1946-11)
(Source)

Reprinted in Unpopular Essays, ch. 2 (1951).

France, Anatole -- (Misquotation)

Dave — Thu, 09 Nov 2023 20:40:12 +0000

It is the certainty that they possess the truth that makes men cruel.

[C’est la certitude qu’ils tiennent la vérité qui rend les hommes cruels.]

Anatole France (1844-1924) French poet, journalist, novelist, Nobel Laureate [pseud. of Jaques-Anatole-François Thibault]
(Misquotation)

Widely attributed (in French and English) to Anatole France, but not found in his works, including the one location it is sometimes cited from, Les Dieux Ont Soif [The Gods Are Thirsty, The Gods Are Athirst, The Gods Will Have Blood] (1912), in either English translation or, more importantly, in the original French.

While thematically keeping in the novel's depiction of the French Revolution and the Terror, the closest match to the quote I can find is this portion of ch. 22, talking about the expediting of the trials of those charged with counter-revolutionary crimes, eliminating the need to prove a misdeed by simply inquiring as to the accused's beliefs.

Justice thus abbreviated satisfied them; the pace was quickened, and no obstacles were left to fret them. They limited themselves to an inquiry into the opinions of the accused, not conceiving it possible that anyone could think differently from themselves except in pure perversity. Believing themselves the exclusive possessors of truth, wisdom, the quintessence of good, they attributed to their opponents noting but error and evil. They felt themselves all-powerful; they envisaged God.
[tr. Allinson (1913), Jackson (1921)]

Justice, thus curtailed, satisfied them; the pace was quickened and no obstacles were left to confuse them. They confined themselves to inquiring into the opinions of the accused, not conceiving it possible that anyone, except from pure perversity, could think differently from themselves. Believing themselves to possess a monopoly of truth, wisdom and goodness, they attributed to their opponents all error, stupidity and evil. They felt themselves omnipotent: their eyes had seen God.
[tr. Davies (1979)]

La justice abrégée les contentait. Rien, dans sa marche accélérée, ne les troublait plus. Ils s’enquéraient seulement des opinions des accusés, ne concevant pas qu’on pût sans méchanceté penser autrement qu’eux. Comme ils croyaient posséder la vérité, la sagesse, le souverain bien, ils attribuaient à leurs adversaires l’erreur et le mal. Ils se sentaient forts : ils voyaient Dieu.
[Original]

Young, Nedrick -- Inherit the Wind, film (1960) [with Harold Jacob Smith]

Dave — Tue, 07 Nov 2023 23:59:49 +0000

Can’t you understand that if you take a law like evolution and make it a crime to teach it in public schools, tomorrow you could make it a crime to teach it in private schools, and tomorrow you may make it a crime to read about it? And soon you may ban books and newspapers. And then you may turn Catholic against Protestant, and Protestant against Protestant, and try to foist your own religion upon the mind of man. If you can do one you can do the other, because fanaticism and ignorance is forever busy and needs feeding.

Nedrick Young (1914-1968) American screenwriter and actor [pseud. Nathan E. Douglas]
Inherit the Wind, film (1960) [with Harold Jacob Smith]
(Source)

The original 1951 play was written by Jerome Lawrence and Robert E. Lee, but does not include this line, delivered in the film by Spencer Tracy. Young and Smith share the screenwriting credits.

Russell, Bertrand -- Interview by Woodrow Wyatt, BBC TV (1959)

Dave — Wed, 01 Nov 2023 16:12:40 +0000

A fanatical group all together have a comfortable feeling that they’re all friends with one another. They are all very much excited about the same thing. You can see it in any political party. There’s always a fringe of fanatics in any political party, and they feel very cozy with one another; and when that is spread about and is combined with a propensity to hate some other group, you get fanaticism well developed.

Bertrand Russell (1872-1970) English mathematician and philosopher
Interview by Woodrow Wyatt, BBC TV (1959)
(Source)

Collected in Bertrand Russell's BBC Interviews (1959) [UK] and Bertrand Russell Speaks His Mind (1960) [US]. Reprinted (abridged) in The Humanist (1982-11/12), and in Russell Society News, #37 (1983-02).

Teller, Edward -- (Attributed)

Dave — Mon, 06 Jun 2022 17:31:51 +0000

I believe in evil. It is the property of all those who are certain of truth. Despair and fanaticism are only differing manifestations of evil.

Edward Teller (1908-2003) Hungarian-American theoretical physicist
(Attributed)
(Source)

Attributed in a personal communication from Judith Shoolery, in Istvan Hargittai, The Martians of Science: Five Physicists Who Changed the Twentieth Century (2006).

Addison, Joseph -- Essay (1711-10-02), The Spectator, No. 185

Dave — Wed, 11 May 2022 13:57:20 +0000

There is nothing in which Men more deceive themselves than in what the World calls Zeal. There are so many Passions which hide themselves under it, and so many Mischiefs arising from it, that some have gone so far as to say it would have been for the Benefit of Mankind if it had never been reckoned in the Catalogue of Virtues. It is certain, where it is once Laudable and Prudential, it is an hundred times Criminal and Erroneous; nor can it be otherwise, if we consider that it operates with equal Violence in all Religions, however opposite they may be to one another, and in all the Subdivisions of each Religion in particular.

Joseph Addison (1672-1719) English essayist, poet, statesman
Essay (1711-10-02), The Spectator, No. 185
(Source)

Butler, Samuel -- The Way of All Flesh, ch. 68 (1903)

Dave — Wed, 20 Apr 2022 15:36:38 +0000

It is the uncompromisingness with which dogma is held and not in the dogma or want of dogma that the danger lies.

Samuel Butler (1835-1902) English novelist, satirist, scholar
The Way of All Flesh, ch. 68 (1903)
(Source)

Darrow, Clarence -- Scopes Trial, Dayton, Tennessee (13 Jul 1925)

Dave — Thu, 20 May 2021 18:53:43 +0000

If today you can take a thing like evolution and make it a crime to teach it in the public school, tomorrow you can make it a crime to teach it in the private schools, and the next year you can make it a crime to teach it to the hustings or in the church. At the next session you may ban books and the newspapers. Soon you may set Catholic against Protestant and Protestant against Protestant, and try to foist your own religion upon the minds of men. If you can do one you can do the other. Ignorance and fanaticism is ever busy and needs feeding. Always it is feeding and gloating for more. Today it is the public school teachers, tomorrow the private. The next day the preachers and the lectures, the magazines, the books, the newspapers. After a while, your honor, it is the setting of man against man and creed against creed until with flying banners and beating drums we are marching backward to the glorious ages of the sixteenth century when bigots lighted fagots to burn the men who dared to bring any intelligence and enlightenment and culture to the human mind.

Clarence Darrow (1857-1938) American lawyer
Scopes Trial, Dayton, Tennessee (13 Jul 1925)
(Source)

Asimov, Isaac -- Asimov’s Guide to Shakespeare, “Henry VI, Part III” (1970)

Dave — Wed, 02 Dec 2020 21:31:30 +0000

He is onstage now to die, unrepentant to the last, and breathing the belief of all extremists always — that all misfortune comes from compromise and that only unyieldingness can win out.

Isaac Asimov (1920-1992) Russian-American author, polymath, biochemist
Asimov’s Guide to Shakespeare, “Henry VI, Part III” (1970)
(Source)

Regarding Clifford, the Lancastrian fanatic, in Act 2, sc. 6.

Teller, Edward -- (Attributed)

Dave — Tue, 01 Dec 2020 00:12:09 +0000

I believe in evil. It is the property of all those who are certain of truth. Despair and fanaticism are only differing manifestations of evil.

Edward Teller (1908-2003) Hungarian-American theoretical physicist
(Attributed)

Quoted in István Hargittai, The Martians of Science: Five Physicists Who Changed the Twentieth Century (2006), via Judith Shoolery.

Koontz, Dean -- Forever Odd, ch. 33 (2005)

Dave — Tue, 29 Sep 2020 16:18:55 +0000

The less depth a belief system has, the greater the fervency with which its adherents embrace it. The most vociferous, the most fanatical are those whose cobbled faith is founded on the shakiest grounds.

Dean Koontz (b. 1945) American writer [also writes as Leigh Nichols]
Forever Odd, ch. 33 (2005)
(Source)

Arendt, Hannah -- Origins of Totalitarianism, Part 3, ch. 10 “A Classless Society,” sec. 1 (1951)

Dave — Tue, 09 Jun 2020 19:55:34 +0000

The disturbing factor in the success of totalitarianism is rather the true selflessness of its adherents: it may be understandable that a Nazi or Bolshevik will not be shaken in his conviction by crimes against people who do not belong to the movement or are even hostile to it; but the amazing fact is that neither is he likely to waver when the monster begins to devour its own children, and not even if he becomes a victim of persecution himself, if he is framed and condemned, if he is purged from the party and sent to a forced-labor or concentration camp. On the contrary, to the wonder of the whole civilized world, he may even be willing to help in his own prosecution and frame his own death sentence if only his status as a member of the movement is not touched.

Hannah Arendt (1906-1975) German-American philosopher, political theorist
Origins of Totalitarianism, Part 3, ch. 10 “A Classless Society,” sec. 1 (1951)
(Source)

See Buchner (1835).

Shaw, George Bernard -- Man and Superman, Act 1 (1903)

Dave — Thu, 19 Mar 2020 20:06:57 +0000

TANNER: The true artist will let his wife starve, his children go barefoot, his mother drudge for his living at seventy, sooner than work at anything but his art.

George Bernard Shaw (1856-1950) Irish playwright and critic
Man and Superman, Act 1 (1903)
(Source)

King, Martin Luther -- “Give Us the Ballot,” Speech, Prayer Pilgrimage for Freedom, Washington, DC (1957)

Dave — Fri, 09 Jun 2017 04:20:24 +0000

This is no day for the rabble-rouser, whether he be Negro or white. We must realize that we are grappling with the most weighty social problem of this nation, and in grappling with such a complex problem there is no place for misguided emotionalism. We must work passionately and unrelentingly for the goal of freedom, but we must be sure that our hands are clean in the struggle. We must never struggle with falsehood, hate, or malice. We must never become bitter. I know how we feel sometime. There is the danger that those of us who have been forced so long to stand amid the tragic midnight of oppression—those of us who have been trampled over, those of us who have been kicked about — there is the danger that we will become bitter. But if we will become bitter and indulge in hate campaigns, the new order which is emerging will be nothing but a duplication of the old order.

Martin Luther King, Jr. (1929-1968) American clergyman, civil rights leader, social activist, preacher
“Give Us the Ballot,” Speech, Prayer Pilgrimage for Freedom, Washington, DC (1957)
(Source)

Parker, Robert -- Promised Land (1974)

Dave — Wed, 15 Mar 2017 21:11:19 +0000

Zealots were always hard. Zeal distorts them. Makes the normal impulses convolute. Makes people fearless and greedless and loveless and finally monstrous. I was against zeal. But being against it didn’t make it go away.

Robert B. Parker (1932-2010) American writer
Promised Land (1974)

Hoffer, Eric -- True Believer: Thoughts on the Nature of Mass Movements, Part 3, ch. 14, § 85 (1951)

Dave — Tue, 10 Jan 2017 04:31:21 +0000

The practice of terror serves the true believer not only to cow and crush his opponents but also to invigorate and intensify his own faith.

Eric Hoffer (1902-1983) American writer, philosopher, longshoreman
True Believer: Thoughts on the Nature of Mass Movements, Part 3, ch. 14, § 85 (1951)
(Source)

Maher, Bill -- The Decider (21 Jul 2007)

Dave — Wed, 11 May 2016 13:43:01 +0000

The problem is that the people with the most ridiculous ideas are always the people who are most certain of them.

William "Bill" Maher (b. 1956) American comedian, political commentator, critic, television host.
The Decider (21 Jul 2007)

Inge, William Ralph -- “Our Present Discontents,” Outspoken Essays: First Series (1919)

Dave — Mon, 12 Oct 2015 12:30:55 +0000

Like other idealisms, patriotism varies from a noble devotion to a moral lunacy.

William Ralph Inge (1860-1954) English prelate [Dean Inge]
“Our Present Discontents,” Outspoken Essays: First Series (1919)

Banks, Iain -- Against a Dark Background, ch. 24 “Fall into the Sea” (1993)

Dave — Thu, 23 Oct 2014 13:12:32 +0000

Sorry? Of course he was sorry. People were always sorry. Sorry they had done what they had done, sorry they were doing what they were doing, sorry they were going to do what they were going to do; but they still did whatever it was. The sorrow never stopped them; it just made them feel better. And so the sorrow never stopped. Fate, I’m sick of it all. […]
Sorrow be damned, and all your plans. Fuck the faithful, fuck the committed, the dedicated, the true believers; fuck all the sure and certain people prepared to maim and kill whoever got in their way; fuck every cause that ended in murder and a child screaming.

Iain Banks (1954-2013) Scottish author
Against a Dark Background, ch. 24 “Fall into the Sea” (1993)
(Source)

Often paraphrased as "Fuck every cause that ends in murder and children crying."

Hoffer, Eric -- True Believer: Thoughts on the Nature of Mass Movements, Part 3, ch. 13, § 62 (1951)

Dave — Mon, 03 Feb 2014 13:38:11 +0000

The opposite of the religious fanatic is not the fanatical atheist but the gentle cynic who cares not whether there is a god or not.

Eric Hoffer (1902-1983) American writer, philosopher, longshoreman
True Believer: Thoughts on the Nature of Mass Movements, Part 3, ch. 13, § 62 (1951)
(Source)

Hume, David -- An Enquiry Concerning the Principles of Morals, Sec. 9.13 “Conclusion, Pt. 1” (1751)

Dave — Mon, 23 Dec 2013 15:13:57 +0000

Where men are the most sure and arrogant, they are commonly the most mistaken, and have there given reins to passion, without that proper deliberation and suspense, which can alone secure them from the grossest absurdities.

David Hume (1711-1776) Scottish philosopher, economist, historian, empiricist
An Enquiry Concerning the Principles of Morals, Sec. 9.13 “Conclusion, Pt. 1” (1751)

Jefferson, Thomas -- Letter (1819-10-31) to William Short

Dave — Thu, 10 Oct 2013 12:17:36 +0000

But the greatest of all the Reformers of the depraved religion of his own country, was Jesus of Nazareth. Abstracting what is really his from the rubbish in which it is buried, easily distinguished by its lustre from the dross of his biographers, and as separable from that as the diamond from the dung hill, we have the outlines of a system of the most sublime morality which has ever fallen from the lips of man: outlines which it is lamentable he did not live to fill up. Epictetus & Epicurus give us laws for governing ourselves, Jesus a supplement of the duties & charities we owe to others. The establishment of the innocent and genuine character of this benevolent Moralist, and the rescuing it from the imputation of imposture, which has resulted from artificial systems,* invented by Ultra-Christian sects, unauthorized by a single word ever uttered by him, is a most desirable object, and one to which Priestley has successfully devoted his labors and learning. It would in time, it is to be hoped, effect a quiet euthanasia of the heresies of bigotry and fanaticism which have so long triumphed over human reason, and so generally & deeply afflicted mankind; but this work is to be begun by winnowing the grain from the chaff of the historians of his life.

* e.g. The immaculate conception of Jesus, his deification, the creation of the world by him, his miraculous powers, his resurrection & visible ascension, his corporeal presence in the Eucharist, the Trinity, original sin, atonement, regeneration, election, orders of Hierarchy, Etc.

Thomas Jefferson (1743-1826) American political philosopher, polymath, statesman, US President (1801-09)
Letter (1819-10-31) to William Short
(Source)

Vidal, Gore -- “President and Mrs. U.S. Grant” (1975)

Dave — Tue, 04 Dec 2012 14:04:23 +0000

That peculiarly American religion, President-worship.

Gore Vidal (1925-2012) American novelist, dramatist, critic
“President and Mrs. U.S. Grant” (1975)

Hoffer, Eric -- True Believer: Thoughts on the Nature of Mass Movements, Part 3, ch. 14, § 75 (3.14.75) (1951)

Dave — Fri, 04 Jun 2010 13:17:09 +0000

Passionate hatred can give meaning and purpose to an empty life. Thus people haunted by the purposelessness of their lives try to find a new content not only by dedicating themselves to a holy cause but also by nursing a fanatical grievance. A mass movement offers them unlimited opportunities for both.

Eric Hoffer (1902-1983) American writer, philosopher, longshoreman
True Believer: Thoughts on the Nature of Mass Movements, Part 3, ch. 14, § 75 (3.14.75) (1951)
(Source)

Jackson, Robert H. -- American Communications Association v. Douds, 339 U.S. 382, 438-439 (1950) [concurrence and dissent]

Dave — Thu, 08 Apr 2010 12:17:54 +0000

It is not to be supposed that the age-old readiness to try to convert minds by pressure or suppression, instead of reason and persuasion, is extinct. Our protection against all kinds of fanatics and extremists, none of whom can be trusted with unlimited power over others, lies not in their forbearance, but in the limitations of our Constitution.

Robert H. Jackson (1892-1954) US Supreme Court Justice (1941-54), lawyer, jurist, politician
American Communications Association v. Douds, 339 U.S. 382, 438-439 (1950) [concurrence and dissent]
(Source)

Jackson, Robert H. -- American Communications Association v. Douds, 339 U.S. 382, 438 (1950) [concurrence and dissent]

Dave — Thu, 01 Apr 2010 13:06:46 +0000

But we must not forget that in our country are evangelists and zealots of many different political, economic and religious persuasions whose fanatical conviction is that all thought is divinely classified into two kinds — that which is their own and that which is false and dangerous. Communists are not the only faction which would put us all in mental straitjackets.

Robert H. Jackson (1892-1954) US Supreme Court Justice (1941-54), lawyer, jurist, politician
American Communications Association v. Douds, 339 U.S. 382, 438 (1950) [concurrence and dissent]
(Source)

Hoffer, Eric -- True Believer: Thoughts on the Nature of Mass Movements, Part 3, ch. 13, § 61 (1951)

Dave — Thu, 25 Feb 2010 16:49:19 +0000

The fanatic cannot be weaned away from his cause by an appeal to his reason or moral sense. He fears compromise and cannot be persuaded to qualify the certitude and righteousness of his holy cause. But he finds no difficulty in swinging suddenly and wildly from one holy cause to another. He cannot be convinced but only converted, His passionate attachment is more vital than the quality of the cause to which he is attached.

Eric Hoffer (1902-1983) American writer, philosopher, longshoreman
True Believer: Thoughts on the Nature of Mass Movements, Part 3, ch. 13, § 61 (1951)
(Source)

Russell, Bertrand -- “Ideas That Have Harmed Mankind,” Unpopular Essays (1950)

Dave — Wed, 12 Aug 2009 12:57:59 +0000

One of the most interesting and harmful delusions to which men and nations can be subjected is that of imagining themselves special instruments of the Divine Will.

Bertrand Russell (1872-1970) English mathematician and philosopher
“Ideas That Have Harmed Mankind,” Unpopular Essays (1950)

Merton, Thomas -- Contemplative Prayer

Dave — Tue, 07 Nov 2006 18:49:31 +0000

When religion becomes a mere artificial façade to justify a social or economic system — when religion hands over its rites and language completely to the political propagandist, and when prayer becomes the vehicle for a purely secular ideological program, then religion does tend to become an opiate. It deadens the spirit enough to permit the substitution of a superficial fiction and mythology for the truth of life. And this brings about the alienation of the believer, so that his religious zeal becomes political fanaticism. His faith in God, while preserving its traditional formulas, becomes in fact faith in his own nation, class or race. His ethic ceases to be the law of God and love, and becomes the law of might-makes-right: established privilege justifies everything. God is the status quo.

Thomas Merton (1915-1968) French-American religious and writer [a.k.a. Fr. M. Louis]
Contemplative Prayer

Yeats, William Butler -- “The Second Coming,” ll.1-8 (1920)

Dave — Sun, 01 Feb 2004 16:00:00 +0000

Turning and turning in the widening gyre
The falcon cannot hear the falconer;
Things fall apart; the centre cannot hold;
Mere anarchy is loosed upon the world,
The blood-dimmed tide is loosed, and everywhere
The ceremony of innocence is drowned;
The best lack all conviction, while the worst
Are full of passionate intensity.

William Butler Yeats (1865-1939) Irish poet and dramatist
“The Second Coming,” ll.1-8 (1920)
(Source)

More examination of this quotation: The Best Lack All Conviction While the Worst Are Full of Passionate Intensity – Quote Investigator. See also Russell and Bukowski.

Russell, Bertrand -- “On Being Modern-Minded,” The Nation (1937-01-09)

Dave — Sun, 01 Feb 2004 19:00:00 +0000

All movements go too far.

Bertrand Russell (1872-1970) English mathematician and philosopher
“On Being Modern-Minded,” The Nation (1937-01-09)
(Source)

Full context:

All movements go too far, and this is certainly true of the movement toward subjectivity, which began with Luther and Descartes as an assertion of the individual and has culminated by an inherent logic in his complete subjection.

Collected in Unpopular Essays (1950).

Pascal, Blaise -- Pensées, ch. 14, Appendix: Polemical Fragments #895 (1669) [tr. Trotter (1910)]

Dave — Sun, 01 Feb 2004 16:00:00 +0000

Men never do evil so completely and cheerfully as when they do it from religious convictions.

[Jamais on ne fait le mal si pleinement et si gaiement, que quand on le fait par un faux principe de conscience.]

Blaise Pascal (1623-1662) French scientist and philosopher
Pensées, ch. 14, Appendix: Polemical Fragments #895 (1669) [tr. Trotter (1910)]
(Source)

Also labeled as Part 2, Article 17, # 53. Sometimes also shown in slightly shorter French as "Jamais on ne fait le mal si pleinement et si gaiement que quand on le fait par conscience."

(Source (French)). Alternate translations:

"We never do evil so fully and cheerfully as when we do it out of conscience." [#813 (#895), tr. Krailsheimer]
"We never do evil so completely and cheerfully as when we do it out of conscience." [Miscellaneous Thoughts 7: Sellier #658/Lafuma #813, tr. Ariew]
"Men never do evil so completely and cheerfully as when they do it conscientiously."

Chesterton, Gilbert Keith -- The Defendant, ch. 16 “A Defence of Patriotism”

Dave — Sun, 01 Feb 2004 16:00:00 +0000

“My Country, right or wrong” is a thing no patriot would think of saying except in a desperate case. It is like saying, “My mother, drunk or sober.”

Gilbert Keith Chesterton (1874-1936) English journalist and writer
The Defendant, ch. 16 “A Defence of Patriotism”
(Source)