The quote reflects a deep sense of disapproval towards Moreau's experiments, highlighting his lack of a clear purpose in his actions. The speaker expresses that while they might have found some understanding if Moreau's motives stemmed from hate or revenge, his irresponsible and reckless curiosity is what truly disturbs them. There is an underlying critique of sacrificing others for the sake of exploration without considering their suffering.
This passage emphasizes the ethical implications of scientific exploration and experimentation. The beings created by Moreau are subjected to misery as they are cast into the world without any intention or care for their well-being. The grief of their pointless existence and the painful deaths they endure reflect a profound moral failure, suggesting that unchecked curiosity can lead to the harm of innocent lives.