“It is clear that thought is not free if the profession of certain opinions makes it impossible to earn a living. It is clear also that thought is not free if all the arguments on one side of a controversy are perpetually presented as attractively as possible, while the arguments on the other side can only be discovered by diligent search.”

“There are two sides to any argument. Does one side always have all the answers? Give it some thought.”

“The present struggle between the South and North is, therefore, nothing but a struggle between two social systems, the system of slavery and the system of free labour. The struggle has broken out because the two systems can no longer live peacefully side by side on the North American continent. It can only be ended by the victory of one system or the other.”

“researchers discovered that people who have just consumed caffeinated drinks were more likely to be swayed by arguments about various controversial topics.55 In short, good evidence that there really is no such thing as a free lunch or an innocent cup of coffee.”

“The vulgar modern argument used against religion, and lately against common decency, would be absolutely fatal to any idea of liberty. It is perpetually said that because there are a hundred religions claiming to be true, it is therefore impossible that one of them should really be true. The argument would appear on the face of it to be illogical, if anyone nowadays troubled about logic. It would be as reasonable to say that because some people thought the earth was flat, and others (rather less incorrectly) imagined it was round, and because anybody is free to say that it is triangular or hexagonal, or a rhomboid, therefore it has no shape at all; or its shape can never be discovered; and, anyhow, modern science must be wrong in saying it is an oblate spheroid. The world must be some shape, and it must be that shape and no other; and it is not self-evident that nobody can possibly hit on the right one. What so obviously applies to the material shape of the world equally applies to the moral shape of the universe. The man who describes it may not be right, but it is no argument against his rightness that a number of other people must be wrong.”

“You see, a conflict always begins with an issue - a difference of opinion, an argument. But by the time it turns into a war, the issue doesn't matter anymore, because now it's about one thing and one thing only: how much each side hates the other.”