"That the only freedom which deserves the name, is that of pursuing our own good in our own way, so long as we do not attempt to deprive others of theirs, or impede their efforts to obtain it."

"He who knows only his own side of the case knows little of that."

"Originality is the only thing which cannot be produced by any process of imitation."

"The only security against error is in the discussion of every subject, and the careful examination of all arguments, by which it can be supported or opposed."

"The 'self-regarding' offences, if they are to be called offences, are not to be punished at all."