“The very idea of toleration is despicable;”

You and Your Research (1986)
Context: Most people like to believe something is or is not true. Great scientists tolerate ambiguity very well. They believe the theory enough to go ahead; they doubt it enough to notice the errors and faults so they can step forward and create the new replacement theory. If you believe too much you'll never notice the flaws; if you doubt too much you won't get started. It requires a lovely balance.

Magna Moralia XLII, p. 193.
The Rod, the Root, and the Flower (1895)

Online promotional material (6 June 2006).
2006

The Never-Ending Wrong (1977)
Context: Anarchy had been a word of fear in many countries for a long time, nowhere more so than in this one; nothing in that time, not even the word "Communism," struck such terror, anger, and hatred into the popular mind; and nobody seemed to understand exactly what Anarchy as a political idea meant any more than they understood Communism, which has muddied the waters to the point that it sometimes calls itself Socialism, at other times Democracy, or even in its present condition, the Republic. Fascism, Nazism, new names for very ancient evil forms of government — tyranny and dictatorship — came into fashion almost at the same time with Communism; at least the aims of those two were clear enough; at least their leaders made no attempt to deceive anyone as to their intentions. But Anarchy had been here all the nineteenth century, with its sinister offspring Nihilism, and it is a simple truth that the human mind can face better the most oppressive government, the most rigid restrictions, than the awful prospect of a lawless, frontierless world. Freedom is a dangerous intoxicant and very few people can tolerate it in any quantity; it brings out the old raiding, oppressing, murderous instincts; the rage for revenge, for power, the lust for bloodshed. The longing for freedom takes the form of crushing the enemy — there is always the enemy! — into the earth; and where and who is the enemy if there is no visible establishment to attack, to destroy with blood and fire? Remember all that oratory when freedom is threatened again. Freedom, remember, is not the same as liberty.

Deeds Rather Than Words (1963)
Context: Every person has his own ideas of the act of praying for God's guidance, tolerance, and mercy to fulfill his duties and responsibilities. My own concept of prayer is not as a plea for special favors nor as a quick palliation for wrongs knowingly committed. A prayer, it seems to me, implies a promise as well as a request; at the highest level, prayer not only is a supplication for strength and guidance, but also becomes an affirmation of life and thus a reverent praise of God.

2000s, Snyder v. Westboro Baptist Church (2007)

Source: The Runaway Queen

Speech to the Third Army (1944)

Vol. 1, Notes to the Chapters: Ch. 7, Note 4
The Open Society and Its Enemies (1945)
Context: The so-called paradox of freedom is the argument that freedom in the sense of absence of any constraining control must lead to very great restraint, since it makes the bully free to enslave the meek. The idea is, in a slightly different form, and with very different tendency, clearly expressed in Plato.
Less well known is the paradox of tolerance: Unlimited tolerance must lead to the disappearance of tolerance. If we extend unlimited tolerance even to those who are intolerant, if we are not prepared to defend a tolerant society against the onslaught of the intolerant, then the tolerant will be destroyed, and tolerance with them. — In this formulation, I do not imply, for instance, that we should always suppress the utterance of intolerant philosophies; as long as we can counter them by rational argument and keep them in check by public opinion, suppression would certainly be unwise. But we should claim the right to suppress them if necessary even by force; for it may easily turn out that they are not prepared to meet us on the level of rational argument, but begin by denouncing all argument; they may forbid their followers to listen to rational argument, because it is deceptive, and teach them to answer arguments by the use of their fists or pistols. We should therefore claim, in the name of tolerance, the right not to tolerate the intolerant. We should claim that any movement preaching intolerance places itself outside the law, and we should consider incitement to intolerance and persecution as criminal, in the same way as we should consider incitement to murder, or to kidnapping, or to the revival of the slave trade, as criminal.