If all mankind minus one were of one opinion, mankind would be no more justified in silencing that one person than he, if he had the power, would be justified in silencing mankind.
power
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.
liberty power presidentsday prevention
The most cogent reason for restricting the interference of government is the great evil of adding unnecessarily to its power.
government power
The only power deserving the name is that of masses, and of governments while they make themselves the organ of the tendencies and instincts of masses.