Marie Darrieussecq : Sleepless

In Macbeth Shakespeare has a great deal to say about sleep; sleep lost through guilt and o’erleaping ambition.  In Act 2 Scene 2 Macbeth says,

Methought I heard a voice cry, ‘Sleep no more!’

Macbeth doth murder sleep: the innocent sleep.

Sleep that knitteth up the ravelled sleeve of care,

The death of each day’s life, sore labour’s bath,

 Balm of hurt minds….