Dean Swift on Free Speech

He (the King of Brobdingnag) said, "he knew no reason why those, who entertain opinions prejudicial to the public, should be obliged to change, or should not be obliged to conceal them. And as it was tyranny in any government to require the first, so it was weakness not to enforce the second: for a man may be allowed to keep poisons in his closet, but not to vend them about for cordials."

Wise king!