Full Idea
All restraint, qua restraint, is an evil.
Clarification
'qua' means 'simply as'
Gist of Idea
Restraint for its own sake is an evil
Source
John Stuart Mill (On Liberty [1857], Ch.5)
Book Reference
Mill,John Stuart: 'Utilitarianism (including On Liberty etc)', ed/tr. Warnock,Mary [Fontana 1962], p.225
A Reaction
The ultimate justification for this is (presumably) utilitarian, but that would mean that there was nothing wrong with restraint if the person did not mind, or was not aware of the restraint. What is intrinsically wrong with restraint?