In an epigraph from The Stolen Journals, Leto explains that his ancestors are his cells, and he is their body.

Leto forces the captured Tleilaxu to perform a dance in Fremen garb. The announcement of his marriage to Hwi disturbs the Fish Speakers, who view themselves as Leto’s only brides. Moneo fears the marriage will confirm the Tleilaxu’s lurid rumors and incite more revolts, but Leto welcomes the attacks. Since meeting Hwi, Leto has been free of loneliness for the first time in ages, and he wishes to experience emotions in this last stage of his life. Hwi reminds him of the beauty and sweetness of life, which makes humankind worth saving. He instructs Moneo to arrange for the wedding to take place in Tabur Village. Leto regards Moneo’s loyalty as its own kind of marriage—an aristocratic oath to privilege and duty that contains a seed of rot. He puts his hopes in Siona and the prospect that she will not follow in her father’s footsteps.

In an epigraph from the Oral History, the voice of Ghanima quotes her father’s warning to not make heroes.

Duncan has reached the stage Leto calls “The Since Syndrome” (372), a condition marked by a ghola’s inevitable suspicions and angst about his cyclical existence.