Freedom of Expression/History/Noteworthy written sources

Freedom of Expression

Is there another noteworthy written source from the past that mentions this right?

Noted philosophers have written commentaries on laws, freedoms, and political theory; these include John Stuart Mill's noteworthy work On Liberty.

Many international treaties, charters, and conventions also work to avidly incorporate the freedom of expression in its foundations. The UN International Covenant on Civil and Political Rights, the European Convention on Human Rights, the American Convention on Human Rights, the African Charter on Human and Peoples’ Rights, and the EU Charter of Fundamental Rights.

References:

John Stuart Mill, On Liberty