"[Spurio and the Duchess kiss] Spurio: Had not that kiss a taste of sin, 'twere sweet. Duchess: Why, there's no pleasure sweet but it is sinful. Spurio: True, such a bitter sweetness fate hath given; Best side to us is the worst side to heaven. Duchess: Push, come: 'tis the old duke thy doubtful father; The thought of him rubs heaven in thy way, But I protest by yonder waxen fire, Forget him or I'll poison him. Spurio: Madam, you urge a thought which ne'er had life. So deadly do I loathe him for my birth, That if he took me hasp'd within his bed, I would add murther to adultery, And with my sword give up his years to death."