The individual is not accountable to society for his actions in so far as these concern the interests of no person but himself. Advice, instruction, persuasion, and avoidance by other people, if thought necessary by them for their own good, are the only measures by which society can justifiably express its dislike or disapprobation of his conduct.
John Stuart Mill (1806-1873) English philosopher and economist
On Liberty, ch. 5 “Applications” (1859)
(Source)