In "Anne of Windy Poplars," L.M. Montgomery explores themes of acceptance and resilience in the face of life's challenges. The quote, "But we must not repine at what Providence has ordained," emphasizes the importance of embracing one’s circumstances rather than lamenting them. It encourages the characters, and by extension the readers, to find peace in the paths that life takes them, even if they are not what they initially desire. This perspective is essential for personal growth and inner strength.

The notion of accepting Providence reminds us that we often have little control over external events. Instead of striving to change what cannot be altered, embracing our situation can lead to a more fulfilling life. The characters in Montgomery's work navigate their struggles with this wisdom, learning to adapt and flourish in their unique environments. Ultimately, the message encourages a positive outlook and a belief that there is purpose behind every experience, even the difficult ones.