All Politeness is owing to Liberty. We polish one another, and rub off our Corners and rough Sides by a sort of amicable Collision. To restrain this, is inevitably to bring a Rust upon Men’s Understandings.

Anthony Cooper, 3rd Earl of Shaftesbury (1671-1713) English politician and philosopher

Characteristicks of Men, Manners, Opinions, Times, Vol. 1, “Sensus Communis” (1711)