In this trifling affair， that misunderstandings and neglect occasion more mischief in the world than even malice and wickedness. At all events， the two latter are of less frequent occurrence.

逻辑学的研究是对正确推理原则的研究。

除了严于自责之外，没有胜过别人的方法；除了自强不息之外，没有超过别人的方法。