A function of free speech under our system of government is to invite dispute. It may indeed best serve its high purpose when it invites a condition of unrest, creates dissatisfaction with conditions as they are, or even stirs people to anger. Speech is often provocative and challenging. It may strike at prejudices and preconceptions and have profound unsettling effects as it passes for acceptance of an idea.
William O. DouglasThe right to dissent is the only thing that makes life tolerable for a judge of an appellate court... the affairs of government could not be conducted by democratic standards without it.
William O. DouglasThe challenge to our liberties comes frequently not from those who consciously seek to destroy our system of government, but from men of goodwill - good men who allow their proper concerns to blind them to the fact that what they propose to accomplish involves an impairment of liberty.
William O. Douglas