Paul Lachine

当今世界的无知

纽约——柏拉图认为无知是一切罪恶的根源,而他对无知反义词知识的定义我们今天还在沿用。柏拉图认为知识是“合理的真实信念”。反省二十一世纪无知所带来的危险能让我们意识到这个定义的宝贵。

柏拉图认为“了解”事物必须满足三个条件:所涉概念必须是真实的;我们必须相信(因为如果我们不相信这是真实的事物,就很难说得上了解);还有最微妙的一点就是必须合理——我们必须有理由相信概念的真实性。

以我们都认为了解的事物为例:地球(大致)呈圆形。这在天文学上属于事实,特别是因为我们已经把人造卫星送入轨道,亲眼目睹了我们的星球呈圆形。绝大多数人(除认为地球是平的狂热份子外)也相信地球呈圆形。

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