Rosalind, disguised as a man, offers to cure the lovesick Orlando, who does not realize he is speaking to the object of his affection.
ROSALIND: No: I will not cast away my physic but on those that are sick. There is a man haunts the forest, that abuses our young plants with carving ‘Rosalind’ on their barks; hangs odes upon hawthorns, and elegies on brambles; all, forsooth, deifying the name of Rosalind: if I could meet that fancy-monger, I would give him some good counsel, for he seems to have the quotidian* of love upon him.
ORLANDO: I am he that is so love-shaked. I pray you, tell me your remedy.
* * *
ROSALIND: 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 punished and cured is, that the lunacy is so ordinary that the whippers are in love too. Yet I profess curing it by counsel.
ORLANDO: Did you ever cure any so?
ROSALIND: Yes, one, and in this manner. He was to imagine me his love, his mistress; and I set him every day to woo me: at which time would I, being but a moonish youth, grieve, be effeminate, changeable, longing and liking; proud, fantastical, apish, shallow, inconstant, full of tears, full of smiles, for every passion something, and for no passion truly anything, as boys and women are for the most part cattle of this colour: would now like him, now loathe him; then entertain him, then forswear him; now weep for him, then spit at him; that I drave my suitor from his mad humour of love to a living humour of madness, which was, to forswear the full stream of the world, and to live in a nook merely monastic. And thus I cured him; and this way will I take upon me to wash your liver as clean as a sound sheep's heart, that there shall not be one spot of love in't.
From William Shakespeare, As You Like it, Act III, Scene ii. *quotidian: a fever recurring daily