370. What are the passions?The passions are the feelings, the emotions or the movements of the sensible appetite - natural components of human psychology - which incline a person to act or not to act in view of what is perceived as good or evil. The principal passions are love and hatred, desire and fear, joy, sadness, and anger. The chief passion is love which is drawn by the attraction of the good. One can only love what is good, real or apparent.
Further reading: CCC 1762-1766, 1771-1772371. Are the passions morally good or bad?The passions insofar as they are movements of the sensible appetite are neither good nor bad in themselves. They are good when they contribute to a good action and they are evil in the opposite case. They can be taken up into the virtues or perverted by the vices.
Further reading: CCC 1767-1770, 1773-1775