What is meant by “Chesed shel emes” in the context of Yosef's promise to bury his father Yaakov in Eretz Yisroel? Is kindness driven by altruism or something else?  Sources include: Rashi, Baal HaTurim, Shaloh, Rambam, Chizkuni, Abarbanel, Zohar with Likutei Torah.  MP3