The outlook and perspective of characters in a poem can be represented through sensory comparisons like sour tastes or sweet. This could be a metaphorical approach to highlight their emotions and perspectives. The overall message seems to be about the power of individual perspectives.
Without the specific poem for reference, it's difficult to give an accurate answer to the question.
However, from the details provided in the question, in many literary works, lemons, buttermilk, and acid could be compared as they are all sour in taste, offering a sensory observation towards the experiences and feelings of the characters. Similarly, the woman in the second stanza might be compared to something like a matchstick if the character is known for igniting conflict or is easily provoked.
In the third stanza, the character might find the world to be a nice place because she holds a positive and good-natured perspective, indicated by living on 'sugar' and 'everything sweet'. The poet's advice could be about feeding one's heart with good and sweet thoughts, which can imply that our emotions and perceptions are often shaped by our thoughts and feelings.
Thus, the overall message given by the poem seems to be that the world appears to us as we perceive it, reflecting the power of our individual perspectives and attitudes.
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