Breadcrumb Home PHILOSOPHY (PHI) PHI 220 PHI 220: LOVE AND FRIENDSHIP Download as PDF Program PHILOSOPHY (PHI) Level Undergraduate Instructor Corrigan, Duplessie, Maher Credits 3 This course investigates the kinds of love, their causes and effects, as well as the necessity, nature, forms, and properties of friendship. Prerequisites PHI 100 and any intermediate PHI course (151–154).