Love is merely a madness; and, I tell you, deserves as well a dark house and a whip as madmen do; and the reason why they are not so punish'd and cured is that the lunacy is so
ordinary that the whippers are in love too.
He reads much;
He is a great observer and he looks
Quite through the deeds of men: he loves no plays,
As thou dost, Antony; he hears no music;
Seldom he smiles, and smiles in such a sort
As if he mock'd himself and scorn'd his spirit
That could be moved to smile at any thing.
Such men as he be never at heart's ease
Whiles they behold a greater than themselves,
And therefore are they very dangerous.
When Rosencrantz asks Hamlet, "Good my lord, what is your cause of distemper? You do surely bar the door upon your own liberty, if you deny your grief to your friends"(III, ii, 844-846), Hamlet responds, "Why, look you now, how unworthy a thing you make of me! You would play upon me; you would seem to know my stops; you would pluck from my lowest note to the top of my compass; and there is much music, excellent voice, in this little organ, yet cannot you make it speak. 'Sblood, do you think I am easier to be played on than a pipe? Call me what instrument you will, though you can fret me, you cannot play upon me." (III,ii, 371-380)
Antonio: Will you stay no longer? nor will you not that I go with you?
Sebastian: By your patience, no. My stars shine darkly over me; the malignancy of my fate might, perhaps, distemper yours; therefore I shall crave of you your leave that I may bear my evils alone. It were a bad recompense for your love to lay any of them on you.
IAGO: She that was ever fair and never proud,
Had tongue at will and yet was never loud,
Never lack'd gold and yet went never gay,
Fled from her wish and yet said 'Now I may,'
She that being anger'd, her revenge being nigh,
Bade her wrong stay and her displeasure fly,
She that in wisdom never was so frail
To change the cod's head for the salmon's tail;
She that could think and ne'er disclose her mind,
See suitors following and not look behind,
She was a wight, if ever such wight were,--
Why then, O brawling love! O loving hate!
O any thing, of nothing first create!
O heavy lightness, serious vanity,
Misshapen chaos of well-seeming forms,
Feather of lead, bright smoke, cold fire, sick health,
Still-waking sleep, that is not what it is!
This love feel I, that feel no love in this.
Preposterous ass, that never read so far
To know the cause why music was ordain'd!
Was it not to refresh the mind of man
After his studies or his usual pain?
(The Taming of the Shrew, 3.1.10-13), Lucentio