How we cite our quotes:
So long as men can breathe, or eyes can see,
So long lives this, and this gives life to thee (13-14)
Remember when we thought this might be a love poem? Well, the last two lines seal it: this is a poem about living, not loving. Note the repetition of "lives" and "life" in the final line. There’s nothing here about love, except for implied self-love on the part of the speaker.