The great loss is the natural sleep. Sleep is the reward of the day. Because Macbeth and Lady Macbeth give up their innocence, they lose the good sleep. “Nature seems dead, and wicked dreams abuse the curtained sleep(53).” “You lack the season of all natures, sleep,” says Lady Macbeth to Macbeth(109). Their sleep is no longer natural. It is forced by them. Their conscience will no longer let them rest. It wants them to suffer for their sins. The doctor observes, “A great perturbation in nature, to receive at/ once the benefit of sleep and do the effects of watching(161).” Macbeth is a slave to his insomnia and Lady Macbeth is very disturbed and walks in her sleep, trying to rub away the traces of her crime. “That were the slaves of drink and thralls of sleep?”(113). They are now slaves to the torture by the evil that they have committed.

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Cheers,

Bruce