Whoever has dealings with others cannot afford to ignore the double nature of human nature. Failure to recognize it leads to confusing consequences. Looking neither for the good alone nor for the bad alone, but remaining emotionally detached during such an act of recognition, is a philosophical attribute. He who possesses it may hold no illusion about the mixed motives in others and yet still practise goodwill toward them. This must be so, for the primal source of all Goodness inspires him daily and constantly to hold to this practice.
-- Notebooks Category 13: Human Experience > Chapter 2: Living in The World > # 408