If each undertook himself to form all his opinions and to pursue the truth in isolation down paths cleared by him alone, it is not probable that a great number of men would ever unite in any common belief.
Now it is easy to see that there is no society that can prosper without such beliefs, or rather there is none that could survive this way; for without common ideas there is no common action, and without common action men still exist, but a social body does not. Thus in order that there be society, and all the more, that this society prosper, it is necessary that all the minds of the citizens always be brought and held together by some principal ideas; and that cannot happen unless each of them sometimes comes to draw his opinions from one and the same source unless each consents to receive a certain number of ready-made beliefs.
(Alexis de Tocqueville, Democracy in America. Chicago: University of Chicago Press, 2002, p. 407).