WHO said: "the raven himself is hoarse/ that croaks the fatal entrance of duncan/ under my battlements. come, you spirits/ that tend on mortal thoughts, unsex me here,/ and fill me from the crown to the toe top-full/ of direst cruelty" and WHATdoesitmean?

Lady Macbeth says this as she prepares to convince her husband to murder King Duncan. She wants to be ruthless and brutal and have no trace of femininity or gentleness in herself. She believes that she wants to be the man she believes Macbeth might not be, and therefore, she wants to become as cruel as possible to help her husband commit the cruelest act of all.