4. “[I have no duty to be anyone’s Friend and no man in the world has a duty to be mine]. [No claims, no shadow] of necessity. Friendship is unnecessary, [like philosophy, like art, like the universe itself] (for [God did not need to create]). [It has no survival value]; rather it is [one of those things which give value to survival].”

—C.S. Lewis, The Four Loves

Hint: Three parallel structures are present in this passage.