In any case, the argument against the persecution of opinion does not depend upon what the excuse for persecution may be. The argument is that we none of us know all truth, that the discovery of new truth is promoted by free discussion and rendered very difficult by suppression, and that, in the long run, human welfare is increased by the discovery of truth and hindered by action based on error. — Bertrand Russell [Religion and Science (New York: Oxford University Press), p. 250.]