This chapter offers the first of two defenses of traditionalism. It argues that our enduring practices are often the way in which we achieve human excellence in any given activity, whether that is a sport or an art or a language or a craft. Relying on the work of Alasdair MacIntyre, it contends that this understanding of a practice as constitutive of a tradition can help us make sense of and appreciate a similar phenomenon in constitutional law. It uses the examples of the law of the Second Amendment and personal jurisdiction in civil procedure to sketch what traditionalism looks like in our constitutional law.