Sonnet 118

Like as to make our appetites more keen, With eager compounds we our palate urge, As to prevent our maladies unseen, We sicken to shun sickness when we purge; Even so being full of your ne'er-cloying sweetness, To bitter sauces did I frame my feeding, And sick of welfare, found a kind of meetness To be diseas'd ere that there was true needing. Thus policy in love, t' anticipate The ills that were not, grew to faults assured, And brought to medicine a healthful state Which, rank of goodness, would by ill be cured.     But thence I learn, and find the lesson true,     Drugs poison him that so fell sick of you.