What idea is conveyed in the lines: 'For I have learned/To look on nature, not as in the hour/Of thoughtless youth; but hearing oftentimes/The sad, still music of humanity'?
Explanation
The correct answer highlights how the poet’s view of nature matures over time, recognizing it as a profound source of significance. Other options misinterpret the lines by focusing on art’s falseness, youthful foresight, or a strict rejection of youthful mistakes.