Free speech is perhaps the most important liberty Americans enjoy. People exercise it every day without even thinking about it, and for good reason it is mentioned in the very first amendment to the U.S. Constitution. But free speech is more than just the words in the Bill of Rights.
Before there was a law, there was the idea of free speech. The law limits the government to protect the right, but does not define the right.
More than simply a legal issue, free speech is a part of American culture—an important distinction. If free speech meant only the words in the Constitution, if all it guaranteed were that the government could not jail us for our words, it would be a dead letter. Governments across the world guarantee rights in their laws yet violate them daily.
Indeed, free speech was not invented in 1791. The law only codifies what the Founders and their contemporaries already believed: that a free people must be allowed to openly express themselves, and that the cure for bad ideas is good ideas, not censorship. –— Kyle Sammin