有一次,苏格拉底的一位门生匆忙地跑来对他说:“老师,告诉你一件你绝对想象不到的事……”“等一下”苏格拉底毫不留情地制止道:“你告诉我的话,用三个筛子过滤过了吗?”他的学生察觉情况不妙,不解地摇了摇头。苏格拉底继续说:“当你要告诉别人一件事时,至少应该用三个筛子过滤一遍!第一个筛子叫做真实,你要告诉我的事是真实的吗?”“我是从街上听来的,大家都这么说,我也不知道是不是真 Once, a disciple of Socrates rushed to say to him: ”Teacher, tell you something you absolutely can not imagine ... “ ”Wait a second“ Socrates relentlessly Stop the road: ”Did you tell me what was filtered with three screens? “ His pupil noticed the situation is not good, shook his head puzzled. Socrates went on to say: ”When you want to tell someone something, you should at least filter it with three sieves! The first sieve is real. Do you want to tell me something is real?“ ”I" It is from the street, everyone says so, I do not know if it is true