The end justifies the means. 只要目的正當，可以不擇手段。

The early bird catches the worm. 早起的鳥兒有蟲吃。

The die is cast. 木已成舟。

The devil sometimes speaks the truth. 魔鬼有時也會說真話。

The devil knows many things because he is old. 老馬識途。

The darkest place is under the candlestick. 燭台底下最暗。

The darkest hour is nearest the dawn. 黎明前的黑暗。

The danger past and God forgotten. 過河拆橋。

The cat shuts its eyes when stealing. 掩耳盜鈴。

The best man stumbles. 偉人也有犯錯時。