People who drive when their judgement and reactions are impaired by drugs are a danger to themselves...,” Mr Joyce said.From John Stuart Mill's harm principle:
"...the sole end for which mankind are warranted, individually or collectively, in interfering with the liberty of action of any of their number, is self-protection. That the only purpose for which power can be rightfully exercised over any member of a civilized community, against his will, is to prevent harm to others. His own good, either physical or moral, is not sufficient warrant...[i]n the part which merely concerns himself, his independence is, of right, absolute. Over himself, over his own body and mind, the individual is sovereign."Discuss.