Answer:
Not to separate parts from the whole.
Step-by-step explanation:
In this poem, the speaker reflects on the nature of beauty. He argues that beauty is a part of an object that is beautiful. However, this quality is not all that an object is. Instead, it is just a part of its nature, and one that depends on many factors and on context. For example, a bird singing in the forest is much more beautiful than the same bird singing in a cage. He also provides the example of seashells, which look much more beautiful when they are part of the beach. The author concludes that it is pointless to look for "parts" of things (such as "beauty") and that instead, we need to learn how to appreciate the whole.