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.
Macbeth has avoided Macduff in the fight, not because he fears him, for he still believes himself invulnerable, but because he is conscious of his own great guilt toward him, and does not wish to add the death of Macduff to that of his wife and children.