Knight Vision

Now whether it be
Bestial oblivion, or some craven scruple
Of thinking too precisely on th' event--
A thought which, quarter'd, hath but one part wisdom
And ever three parts coward--I do not know
Why yet I live to say this thing's to do,
Sith I have cause, and will, and strength, and means
To do't.

--Hamlet, Hamlet IV, 4, 39-46