“If there was no error in principle or practice, then controversy, which is only another name for opposition to error, real or supposed, would be unnecessary. If it were lawful, or if it were benevolent, to make a truce with error, then opposition to it would be both unjust and unkind. If error were innocent and harmless, then we might permit it to find its own quietus, or to immortalize itself. But so long as it is confessed that error is more or less injurious to the welfare of society, individually and collectively considered, then no man can be considered benevolent who does not set his face against it. In proportion as a person is intelligent and benevolent, he will be controversial, if error exist around him. Hence the Prince of Peace never sheathed the sword of the Spirit while he lived. He drew it on the banks of the Jordan and threw the scabbard away.”
— Alexander Campbell, “Religious Controversy,” Millennial Harbinger, Vol. 1, No. 1, January 4, 1830.