CLEOPATRA: [to the old musician] I want to learn to play the harp with my own hands. Caesar loves music. Can you teach me?
MUSICIAN: Assuredly I and no one else can teach the queen. Have I not discovered the lost method of the ancient Egyptians, who could make a pyramid tremble by touching a bass string? All the other teachers are quacks: I have exposed them repeatedly.
CLEOPATRA: Good: you shall teach me. How long will it take?
MUSICIAN: Not very long: only four years. Your Majesty must first become proficient in the philosophy of Pythagoras.
CLEOPATRA: Has she [indicating the slave] become proficient in the philosophy of Pythagoras?
MUSICIAN: Oh, she is but a slave. She learns as a dog learns.
CLEOPATRA: Well, then, I will learn as a dog learns; for she plays better than you. You shall give me a lesson every day for a fortnight. [The musician hastily scrambles to his feet and bows profoundly]. After that, whenever I strike a false note you shall be flogged; and if I strike so many that there is not time to flog you, you shall be thrown into the Nile to feed the crocodiles. Give the girl a piece of gold; and send them away.
--Caesar and Cleopatra Act IV, Scene 1