If you wish to bring peace to the universe the only way to do it as the Rebbe teaches, is through this idea – namely, just as the human organism, contains multiple complementary systems, so it would make no sense for the heart to be jealous of the hand and vice versa or for the head to be jealous of the feet and vice versa, for not only are their functions unique, they are obviously highly complementary, and we must understand that the same applies to humanity as a whole