Besides, this Duncan

Hath borne his faculties so meek, hath been

So clear in his great office, that his virtues

Will plead like angels, trumpet-tongued, against

The deep damnation of his taking-off;

And pity, like a naked new-born babe,

Striding the blast, or heaven's cherubim, horsed

Upon the sightless couriers of the air,

Shall blow the horrid deed in every eye,

That tears shall drown the wind. I have no spur

To prick the sides of my intent, but only

Vaulting ambition, which o'erleaps itself,

And falls on the other.

William Shakespeare (1564-1616): Macbeth. Act i. Sc. 7.