最危险的事情就是自以为知道自己在做什么。
最个人的东西也是最普遍的。
唯一真正的信仰是对爱的信仰。
测量一切可测之物,并把不可测的变为可测。
Three things are necessary for the salvation of man: to know what he ought to believe; to know what he ought to desire; and to know what he ought to do.