In the novel "Jurassic Park" by Michael Crichton, the complexities and ethical dilemmas surrounding genetic engineering and the revival of extinct species are explored. The narrative raises questions about humanity's desire to manipulate nature and the consequences that can ensue from such actions. The quote, "You know, at times like this one feels, well, perhaps extinct animals should be left extinct," encapsulates this sentiment, suggesting that some things may be better left in the past.

This quote highlights the tension between scientific curiosity and the potential risks of resurrecting extinct creatures. It reflects a broader theme of the book, which warns against the hubris of attempting to control nature without fully understanding it. The story serves as a cautionary tale, reminding readers that the ambition to conquer natural boundaries can lead to unforeseen and potentially dangerous outcomes.