From which Shakespearean plays do the following lines come? a. "It is a tale told by an idiot, full of sound and fury, signifying nothing." b. If music be the food of love, play on."

These iconic lines offer a glimpse into the profound psychological depths and whimsical romanticism that define William Shakespeare's enduring works. The somber reflection, "It is a tale told by an idiot, full of sound and fury, signifying nothing," originates from the tragic play Macbeth. This powerful declaration is uttered by the titular character in Act 5, Scene 5, following the news of his wife Lady Macbeth's death. It encapsulates his utter despair and nihilistic view of life as his tyrannical reign crumbles around him, a stark commentary on ambition, guilt, and the ultimate futility of human endeavors. This soliloquy is one of the most famous in English literature, often cited for its profound philosophical weight.

In stark contrast, the romantic and lyrical invitation, "If music be the food of love, play on," opens Shakespeare's delightful comedy, Twelfth Night. These words are spoken by Duke Orsino, who is deeply enamored with the Countess Olivia. Orsino, in his lovesick state, uses music to feed his melancholy and longing, hoping that an overabundance of it might cure him of his infatuation, or perhaps deepen it further. This line immediately establishes the play's themes of love, desire, and the often-farcical nature of romance, setting the stage for a world of mistaken identities, cross-dressing, and eventual happy resolutions. Both quotes, though vastly different in tone and context, showcase Shakespeare's unparalleled mastery of language and his ability to capture the full spectrum of human emotion.