Better be with the dead,

Whom we, to gain our peace, have sent to peace,

Than on the torture of the mind to lie

In restless ecstasy. Duncan is in his grave;

After life's fitful fever he sleeps well:

Treason has done his worst; nor steel, nor poison,

Malice domestic, foreign levy, nothing,

Can touch him further.

William Shakespeare (1564-1616): Macbeth. Act iii. Sc. 2.