In Act I Scene 5 of Hamlet, What is the main idea of Hamlet's soliloquy that begins, "O all you host of heaven!"?

In this ,
spoken immediately after the spirit of 's father has vanished,takes a moment to reflect on what
he has just learned. Part of this soliloquy is simply Hamlet's rage and shock at his uncle's
treachery and the fact that his mother married such a man. He also resolves to dedicate himself
completely to avenging his father's murder:

All saws of
books, all forms, all...