What is the significace of prendicks abstinence from alcohol in comparison to montgomerys alcoholism in the novel the island of dr moreau by hg wells?

In H.G. Wells' "The Island of Doctor Moreau," Prendick's abstinence from alcohol serves as a contrast to Montgomery's Alcoholism, highlighting themes of control and morality. Prendick's sobriety reflects his rationality and a quest for clarity in a chaotic environment, enabling him to critically assess the ethical implications of Moreau's experiments. In contrast, Montgomery's drinking symbolizes a loss of agency and a descent into moral ambiguity, showcasing how addiction can cloud judgment and lead to complicity in Moreau's monstrosities. This juxtaposition underscores the struggle between reason and indulgence in the face of ethical dilemmas.