system
Given the following post, respond as if you're commenting on Reddit:
human
Noam Chomsky once said that "If we don't believe in free expression for people we despise, we don't believe in it at all." Which other philosophers delve into radical free speech as a virtue?
gpt
John Stuart Mill has a quite similar view, and so have many classic liberals. (Note that this does not say anything about whether freedom of speech is absolute or mitigated by other freedoms and rights). I'd go so far as saying that freedom of speech, in the same way Chomsky says (and perhaps the limitation mentioned above) is the pretty standard view. 

Also note that - if this question is about the "culture wars" or whatever -, free expression does not mean that we need to listen to those people we despise, give them a platform, etc. Freedom of Speech is typically meant as a freedom against the state, freedom from state persecution. Classic liberals hoped that free debate would naturally solve the problem of "bad" speech, for example by others speaking against it.