Herman Melville, in his book "Mardi and a Voyage Thither," presents the idea that evil is an enduring issue that pervades the universe. He suggests that while evil may be contained or suppressed in one area, it inevitably finds a way to manifest elsewhere. This notion implies a pervasive struggle between light and darkness, indicating that evil, much like a chronic illness, cannot be entirely eradicated but instead shifts and re-emerges in different forms.

This perspective provokes reflection on the nature of morality and the human condition. It underscores the relentless presence of evil, suggesting that efforts to combat it can often lead to its resurgence in another guise. Melville's observation serves as a reminder that vigilance is necessary, as evil can reappear unexpectedly, challenging individuals and societies to remain aware of its multifaceted nature and the continuous battle against it.