George kills Lennie to spare him from a painful death inflicted by Curley and to prevent him from causing harm to others in the future due to his mental disability.
In Bram Stoker's novel "Dracula," Lucy Westenra receives blood transfusions from several characters, including Dr. John Seward, Quincey Morris, and Arthur Holmwood.
The play is called The Crucible because a crucible is a container used for melting and purifying metal, and in the play, the events that unfold can be seen as a metaphorical melting pot of intense emotions and purifying of characters' true selves.