"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"

This quote by Ernest Hemingway suggests that morality is subjective and based upon individual sensations. He suggests that what is moral for one person might not be ethical for another. He recommends that the very best way to determine what is moral is to think about how one feels after an action. If one feels good after an action, then it is likely ethical, and if one feels bad after an action, then it is likely immoral. This quote motivates individuals to think about their actions and how they make them feel. It suggests that morality is not a set of guidelines, but rather a personal decision based upon one's own sensations. Eventually, Hemingway's quote encourages people to be mindful of their actions and to consider how they make them feel.