What metaphors are used in The Education of Henry Adams by Henry Adams?

Adams consistently interrupts unified pictures with inhuman forces. One of the way s in which these two techniques work is exemplified in the death of his sister. His sister, symbolizing the unity of femininity and youth, has an accident that leads to an excruciating death. As Adams witnesses this, he identifies the entrance of nature into his text as a force of chaos that will forever disrupt attempts by humans to form unity.