You can also, for instance, keep say 100 Citrix servers in a data center and roll out 'thin clients' to 2500+ people around the globe. The servers are then kept secure and safe (since that's where the data is), and the client PCs have nothing to them.
Our fear is in Banquo. stick deep. Macbeth and Lady Macbeth is talking with each other as Macbeth ordered killers to assassin Banquo and his son. However, by looking at this quote, Macbeth mentions that he is sacred and in fact he's fear in Banquo stick deep into his heart.
The spots of blood Lady Macbeth dreamed she saw on her hands were symbolic of her guilt, showing that even though she tried to rid herself of her emotions and feelings of compassion (Unsex me here), the crime she helped to commit (The murder of Duncan) truly did affect her. In fact, it drove her to insanity.