My love is as a fever, longing still

For that which longer nurseth the disease,

Feeding on that which doth preserve the ill,

Th' uncertain sickly appetite to please.

My reason, the physician to my love,

Angry that his prescriptions are not kept,

Hath left me, and I desperate now approve

Desire is death, which physic did except.

          - My love is as a fever – Sonnet 147

          William Shakespeare