Comparing Jean-Paul Sartre and Immanuel Kant

A recurring theme in the chapters on epistemology and ethics has been the dichotomy of reason/emotion.  Various authors have favored either reason or emotion as the most promising source of knowledge, whether knowledge of the physical world around us oror knowledge of morality, what is right or wrong to do in a given situation. Compare and contrast one of the following pairs of authors on this issue, and argue for the view you believe is more convincing/plausible/accurate