The first quatrain introduces the idea that love is not all that is needed in life. Instead of describing the usual emotional, natural beauties of love, the poem surprisingly lists life’s essentials and states that love is not what you need to physically survive. It is obviously not food or water, or shelter from bad weather. The next two lines in the quatrain create a vivid picture in one’s mind;
“Nor yet a floating spar to men that sink And rise and sink and rise and sink again”
This imagery paints the tragic scene of a man helplessly drowning in the middle of the ocean without any hope. This is showing that love is not anything tangible that can save anyone. Some of the stressed syllables are on “rise” and “sink” which creates a more dramatic feeling or mood. In the second quatrain, the poem shifts to describe bodily processes that are fatal if they are lacking. Breathing, filtering blood, fixing broken bones and other ailments in the body are crucial to life; without those, love could not begin to exist.