\"我唯一知道的事，就是我什麽都不知道\"。這是蘇格拉底的一句格言

，聽到這句話，可以想象，一千多年前的蘇格拉底是多麽的渴望認識世界，還有他謙虛的態度。

The impreciseness of the paraphrase of this as I know that I know nothing stems from the fact that Plato's Socrates is not saying that he does not know anything but means instead that he cannot know anything with the absolute certainty of seeing. Socrates feels confident only in his possibly being mistaken about what he has known through seeing given the power of the imagination...

http://en.wikipedia.org/wiki/I_know_that_I_know_nothing