To think justly, we must understand what others mean; to know the value of our thoughts, we must try their effect on other minds.
要正确地思考，我们必须领悟别人的意思；要想知道自己见解的价值，我们必须检验它们对别人有何影响。
——威廉·黑兹利特（William Hazlitt，英国作家）
