Mark Thomas’ famous work ‘On Liberty’ (1863)
Maybe I missed out on this article first time around (I put it down to being 14 at the time). However it’s now gone long enough to not look unobservant, and instead be producing a ‘modern classic’ for you to read.
As it’s about free speech and censorship it’s particulary relevant to what we’re doing right now, as long as you ignore that bit in their about David Blunkett.