In Some Thoughts Concerning Education (1689), John Locke gives an intricate account of the role that education plays in inculcating the moral and intellectual virtues that equip individuals for a life of liberty; and in Locke’s view, it is parents, within the confines of the fundamental association of the family, who have the responsibility to ensure that children receive this education.

-Peter Berkowitz, The Liberal Spirit in America

In this essay, Berkowitz discusses the tensions in American political thought. He obviously prefers the word "tension" to "contradiction."