Advice for doing, from Hamlet.

Of thinking too precisely on th’ event—
A thought which, quartered, 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. Examples gross as earth exhort me.
Witness this army of such mass and charge
Led by a delicate and tender prince,
Whose spirit with divine ambition puffed
Makes mouths at the invisible event,
Exposing what is mortal and unsure
To all that fortune, death, and danger dare,
Even for an eggshell. Rightly to be great
Is not to stir without great argument,
But greatly to find quarrel in a straw
When honor’s at the stake. How stand I then,
That have a father killed, a mother stained,
Excitements of my reason and my blood,
And let all sleep—while, to my shame, I see
The imminent death of twenty thousand men,
That for a fantasy and trick of fame
Go to their graves like beds, fight for a plot
Whereon the numbers cannot try the cause,
Which is not tomb enough and continent
To hide the slain? Oh, from this time forth,
My thoughts be bloody, or be nothing worth!