Ah, one of my favorite passages......Can one have lived long enough?

Act V, scene 3

MACBETH Seyton!--I am sick at heart,
When I behold--Seyton, I say!--This push
Will cheer me ever, or disseat me now.
I have lived long enough: my way of life
Is fall'n into the sear, the yellow leaf;
And that which should accompany old age,
As honour, love, obedience, troops of friends,
I must not look to have; but, in their stead,
Curses, not loud but deep, mouth-honour, breath,
Which the poor heart would fain deny, and dare not. Seyton!

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MACBETH
Cure her of that.
Canst thou not minister to a mind diseased,
Pluck from the memory a rooted sorrow,
Raze out the written troubles of the brain
And with some sweet oblivious antidote
Cleanse the stuff'd bosom of that perilous stuff
Which weighs upon the heart?

Doctor:
Therein the patient
Must minister to himself.

MACBETH
Throw physic to the dogs; I'll none of it.
Come, put mine armour on; give me my staff.
Seyton, send out. Doctor, the thanes fly from me.
Come, sir, dispatch. If thou couldst, doctor, cast
The water of my land, find her disease,
And purge it to a sound and pristine health,
I would applaud thee to the very echo,
That should applaud again.--Pull't off, I say.--
What rhubarb, cyme, or what purgative drug,