In his book 'Moral Imagination,' Mark Johnson argues that morality is fundamentally imaginative rather than merely a system of universal laws, highlighting the essential role of cognitive science in ethical deliberation. He suggests that our moral understanding is shaped by metaphors that inform our reasoning and decision-making processes, with a focus on the tension between human passions and rationality. Ultimately, the moral law folk theory posits that moral behavior stems from a struggle between reason and passion, emphasizing the importance of cultivating a strong will guided by reason.