The ancient world's memory and commemorative practices tell us about what kinds of continuity mattered to different civilizations and what they feared losing.

Roman ancestor cult — the preservation of wax masks of deceased ancestors displayed in the atrium, brought out at funerals in procession — was a physical embodiment of family continuity. The family's history was present in the house in a literal, visible form. The destruction of a family's imagines was a social catastrophe; Cicero's references to his ancestors' busts are more than rhetorical flourish.

Athenian funeral orations (the epitaphios logos, of which Pericles' speech as reported by Thucydides is the most famous example) created a civic memory in which individual sacrifice was subsumed into collective Athenian identity. The genre standardized what Athenian sacrifice meant and what Athens represented — an ideological construction that shaped how Athenians understood their own history.

Egyptian mortuary texts and tomb paintings are the most systematic ancient attempt to preserve a complete record of a life — the occupant's titles, accomplishments, family relationships, and image — for eternity. The tomb was a house for the dead, equipped with everything needed for eternal existence. The scale of this investment in preservation reveals what ancient Egyptians thought was most important to preserve.