The rule of friendship means there should be mutual sympathy between them, each supplying what the other lacks and trying to benefit the other, always using friendly and sincere words.
Each one of us has lived through some devastation, some loneliness, some weather superstorm or spiritual superstorm, when we look at each other we must say, I understand. I understand how you feel because I have been there myself. We must support each other and empathize with each other because each of us is more alike than we are unalike.
Good-night! good-night! as we so oft have said Beneath this roof at midnight, in the days That are no more, and shall no more return. Thou hast but taken up thy lamp and gone to bed; I stay a little longer, as one stays To cover up the embers that still burn.