Habit

"We are discreet sheep; we wait to see how the drove is going, and then go with the drove. We have two opinions: one private, which we are afraid to express; and another one—the one we use—which we force ourselves to wear . . . until habit makes us comfortable in it, and the custom of defending it presently makes us love it, adore it, and forget how pitifully we came by it." (1885) ~ MARK TWAIN