Ancient Athenians adored freedom of speech. Naming a warship after the very concept.

399BC - Socrates speaks to jury at his trial: 'If you offered to let me off this time on condition I am not any longer to speak my mind... I should say to you, "Men of Athens, I shall obey the Gods rather than you."'

1516 - The Education of a Christian Prince by Erasmus. 'In a free state, tongues too should be free.'

In the 1600s, Galileo was executed for mere speech.