¹⁵ If the foot says, “Because I am not a hand, I am not a part of the body,” is it not on the contrary still a part of the body? ¹⁶ If the ear says, “Because I am not an eye, I am not a part of the body,” is it not on the contrary still a part of the body? ¹⁷ If the whole body were an eye, where would the hearing be? If the whole [body] were an ear, where would the sense of smell be? ¹⁸ But now [as things really are], God has placed and arranged the parts in the body, each one of them, just as He willed and saw fit [with the best balance of function]. ¹⁹ If they all were a single organ, where would [the rest of] the body be? ²⁰ But now [as things really are] there are many parts [different limbs and organs], but a single body. ²¹ The eye cannot say to the hand, “I have no need of you,” nor again the head to the feet, “I have no need of you.”