The deepest urge in human nature is the desire to be important.
The past is always carried into the present by small things.
The human race has one really effective weapon, and that is laughter.
The path to success is to take massive, determined action.
在这个行业里，你必须大胆，但绝不能鲁莽。
追求完美的想法，是一个好计划的最大敌人。
解释：河流川泽中有污水，深山草野中藏有瘴气，美玉也有微小的瑕疵。