This is a powerful and stark analogy, emphasizing the unchangeable nature of inherent character. Let's break down its components and meaning:
The Core Analogy:
* "If someone brings rat leather and washes again and again / But still it remains black and never turns into white": This is the central image. Rat leather, often associated with something undesirable, dirty, or lowly, is presented as inherently black. No amount of external effort (washing, cleansing) can alter its fundamental color. It's a vivid and somewhat harsh metaphor for an unchangeable characteristic.
The Comparison to Human Nature:
* "Likewise nobody can change ones natural nature by any force": This is the direct application of the analogy to human beings. Just as the rat leather's color cannot be changed, so too, a person's "natural nature" – their innate disposition, core character, fundamental tendencies, or deep-seated personality traits – cannot be altered by external pressure or force.
* "By any force": This is crucial. It implies that no amount of coercion, persuasion, punishment, or external influence can fundamentally transform who a person truly is at their core.
The Emphatic Conclusion:
* "Mark My words and never forget them": This is a strong and assertive statement from the speaker, indicating that they believe this observation to be an absolute truth and a profound insight worth remembering. It carries a tone of certainty and perhaps a touch of weariness or disillusionment from experience.
Analysis and Interpretation:
* Immutability of Core Character: The central message is about the deeply ingrained and unchangeable aspects of a person's being. It suggests that while behaviors might be modified, or people might adapt to situations, their fundamental "nature" remains constant.
* Skepticism about Reform/External Influence: The statement expresses skepticism about the ability of external forces (like education, therapy, or societal pressure) to fundamentally alter someone's innate disposition. It leans towards a more deterministic view of personality.
* Warning or Resignation: Depending on the context, this could be a warning to others (e.g., "Don't waste your time trying to change someone who fundamentally won't change") or a statement of resignation ("This is just how people are").
* Nature vs. Nurture: The analogy strongly favors the "nature" side of the nature vs. nurture debate, asserting that inherent traits are dominant and resistant to change from "nurture" (the washing).
* Potential Harshness: While offering a strong point, the analogy is quite stark. It can be seen as somewhat fatalistic, implying that people are fixed entities. In reality, human beings are complex, and while core traits might be persistent, growth, learning, and self-improvement are also possible, perhaps more through internal desire than external "force." However, the poem focuses specifically on "natural nature" and "force."
In summary, the speaker is delivering a firm, experienced-based declaration that a person's intrinsic nature is unalterable by external means, using the vivid and somewhat grim metaphor of unchangeable rat leather. They want this truth to be remembered as a fundamental insight into human character.
