31．學會趨利避害

    學會趨利避害。黴運往往是對愚蠢的懲罰，且極易傳染。不要以惡小而開門，因為大惡往往會随之而來。玩牌的訣竅是：你應明白自己何時該舍棄某張牌。在過去的一局中，最大的牌也比不上現在最小的王牌。假如你舉棋不定，記得結交智慧而審慎的人，他們遲早會赢。

    

31．Selecttheluckyandavoidtheunlucky

    Selecttheluckyandavoidtheunlucky.Ill-luckisgenerallythepenaltyoffolly,andthereisnodiseasesocontagioustothosewhoshareinit.Neveropenthedoortoalesserevil,forotherandgreateronesinvariablyslinkinafterit.Thegreatestskillatcardsistoknowwhentodiscardthesmallestofcurrenttrumpsisworthmorethantheaceoftrumpsofthelastgame.Whenindoubt,followthesuitofthewiseandprudentsoonerorlatertheywillwintheoddtrick.