In this article we will compare Goethe's Faust with that of Kant, examine the "Foundations of the metaphysics of morality" and examine the relationship between reason and human emotion. Goethe's Faust is considered one of the greatest dramatic poems, and is divided into two parts; in the first part he uses reason and in the second part he uses passion. Even knowing that the story is based on a medieval man or a medieval legend who sold his soul to the devil, we can actually say or treat this text as the modern man's kind of alienation and need to be part of the world in which he lives. in. On the other hand, Kant's “Foundations of the Metaphysics of Morals” discusses reason and emotion. For example, Kant wants people to think for themselves and ask themselves why they think, what they think, and question others before relying on them. Faust represents the "Enlightenment scholar" that Kant says we can be and is unhappy, stating that thought is not an agent and believes that nothing can satisfy his life and that now all his joys will come from the world. In Faust's adventures between light and darkness (light as heaven and darkness as hell), in the search for happiness or for Kant in the search for morality, man must learn to conquer the small things or elements of one's nature and always live constructively within the challenges and objectives that are imposed on him. As Kant said, to find morality or happiness people must defend their own beliefs and do not need others to be a good moral person. So for this article the following paragraphs will compare and contrast Kant's ideas in “Foundation of the Metaphysics of Morals” and Goethe's ideas in the poem Faust. For Kant in “Foundation of the Metaphysics of M.... .. middle of the paper ...... makes you cold; Dear guys, I'm not offended; Remember: the Devil is old, grow old yourself and it will make sense!” (Goethe). This shows that the deceptions he had during his adventures made him grow as a person, in contrast to Kant's ideas such as “Dare to use your reason – This is the motto of enlightenment” (Kant). What Kant and Goethe mean by these quotes is that if you use reason, you will become a better person with better morals. So what both works try to tell us about human reason and emotion is that Kant was more direct with his moral ideas and Goethe, showing us with the poem Faust, that even in a dramatic way it is possible to use such reason and emotion, but it will only depend on you, each of these will be better for you. As said before in Faust “As soon as you have faith in yourself, you will know how to live”