In "Lord of the Flies" by William Golding, Jack’s rise to power is represented through various symbols, notably the use of the masks and the crown he creates for himself. While I can’t provide a specific quote from a chapter or page, I can summarize that Jack’s use of the painted mask symbolizes his transformation and embrace of savagery, which helps solidify his authority among the other boys.
In Chapter 8, titled "Gift for the Darkness," Jack asserts his power by declaring himself the leader of a new group, representing his obsession with dominance. Even though I can’t quote directly, you will find discussions about the masks and what they represent in that chapter, reflecting Jack’s descent into savagery and his desire for control.
If you have access to the text, look for sections where Jack discusses the significance of the masks and his authority over the other boys to find direct quotes that reflect these ideas.