“The kind of truth that can be asserted by argument had lost all glamour, all lustre, for him, seeming no more now than another aspect of that ancient urge – much older than the desire for truth – to command attention, dominate one’s fellows.”

“Causing any damage or harm to one party in order to help another party is not justice, and likewise, attacking all feminine conduct [in order to warn men away from individual women who are deceitful] is contrary to the truth, just as I will show you with a hypothetical case. Let us suppose they did this intending to draw fools away from foolishness. It would be as if I attacked fire — a very good and necessary element nevertheless — because some people burnt themselves, or water because someone drowned. The same can be said of all good things which can be used well or used badly. But one must not attack them if fools abuse them.”

“The most striking difference between ancient and modern sophists is that the ancients were satisfied with a passing victory of the argument at the expense of truth, whereas the moderns want a more lasting victory at the expense of reality”

“The clash of ideas is not weakness.Truth reaches its place when tussling with error.”

“…I am not, however, militant in my atheism. The great English theoretical physicist Paul Dirac is a militant atheist. I suppose he is interested in arguing about the existence of God. I am not. It was once quipped that there is no God and Dirac is his prophet.”

“It’s a strange truth that no matter how persuaded we might be of our own correctness, the discomfiting realization that others disagree with us causes a paralyzing inability to argue the case convincingly.”

“They dispute not in order to find or even to seek Truth, but for victory, and to appear the more learned and strenuous upholders of a contrary opinion. Such persons should be avoided by all who have not a good breastplate of patience.”

“A good objection helps one forward, a shallow objection, even if it is valid, is wearisome. … The objection does not seize the matter by its root, where the life is, but so far outside that nothing can be rectified even if it is wrong. A good objection helps directly towards a solution, a shallow one must first be overcome and can, from then on, be left to one side. Just as a tree bends at a knot in the trunk in order to grow on.”

“It is often argued that religion is valuable because it makes men good, but even if this were true it would not be a proof that religion is true. That would be an extension of pragmatism beyond endurance. Santa Claus makes children good in precisely the same way, and yet no one would argue seriously that the fact proves his existence. The defense of religion is full of such logical imbecilities. The theologians, taking one with another, are adept logicians, but every now and then they have to resort to sophistries so obvious that their whole case takes on an air of the ridiculous. Even the most logical religion starts out with patently false assumptions. It is often argued in support of this or that one that men are so devoted to it that they are willing to die for it. That, of course, is as silly as the Santa Claus proof. Other men are just as devoted to manifestly false religions, and just as willing to die for them. Every theologian spends a large part of his time and energy trying to prove that religions for which multitudes of honest men have fought and died are false, wicked, and against God.”

“There’s more to logic than identifying logical fallacies.”

“Atheism leaves a man to sense, to philosophy, to natural piety, to laws, to reputation; all which may be guides to an outward moral virtue, though religion were not; but superstition dismounts all these, and erecteth an absolute monarchy in the minds of men. Therefore atheism did never perturb states; for it makes men wary of themselves, as looking no further: and we see the times inclined to atheism (as the time of Augustus Cæsar) were civil times. But superstition hath been the confusion of many states, and bringeth in a new primum mobile, that ravisheth all the spheres of government. The master of superstition is the people; and in all superstition wise men follow fools; and arguments are fitted to practice, in a reversed order.”

“Our enemies are quite good for relentlessly keeping us sharp and on our toes. This especially goes for sincere philosophers. They use their enemies to challenge their arguments so that they can know the weak points in their own reasoning and how to argue for and strengthen their position. There are just none like one’s enemies to always look for his mistakes and do it harder than anyone else.”

“It is clear that the individual who persecutes a man, his brother, because he is not of the same opinion, is a monster.”

“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.”