Final answer:
The question deals with the theme of evil, its occurrence in humans and society, and the inevitable consequences that follow, as seen through various literary excerpts. The key focus is the universality of evil and the moral and philosophical questions it raises in literature.
Step-by-step explanation:
The passage in question is centered on the theme of evil and its inherent presence in humans and society as depicted in various texts. The reference to Tuscans and the mention of the phrase "What's done is at an end" is not directly linked to any specific text or historical figure, but it sounds like it could be alluding to a broader sense of regret or finality after an act of evil. The excerpts provided touch on the concept of evil from different perspectives, suggesting its universality and the struggle people face in acknowledging and confronting it within themselves and the world around them. Some of the excerpts depict evil as something that afflicts even the greatest among us ("But evil things, in robes of sorrow, Assailed the monarch's high estate"), while others suggest a sense of inevitability or fate associated with evil ("If evil good appear To any, Fate is near"). These themes are common in literature, and the student's question might be related to texts that explore the nature of evil, moral philosophy, or the use of symbolism in literature.