So far, about morals, I know only that what is moral is what you feel good after and what is immoral is what you feel bad after.

The remark reduces morality to an after-the-fact emotional test: actions are “moral” if they leave one feeling good afterward and “immoral” if they leave one feeling bad. Read this way, it expresses a skeptical, anti-dogmatic stance toward external moral codes and emphasizes personal experience over abstract rules. It also hints at the limits of such a standard: feelings can be unreliable, culturally conditioned, or self-serving, so the line can be taken either as a candid confession of uncertainty (“so far… I know only…”) or as a deliberately provocative challenge to moral absolutism. In a Hemingway context, it aligns with an ethic grounded in lived consequences rather than sermonizing.