We don't know precisely what Plato thought, but we are helped, at least, by a kind of intellectual autobiography that he wrote and that we still have, in what is " conventionally referred to as The Seventh Letter.

我们无法确切明了柏拉图的想法，但至少我们能透过,某种理智的自传找到线索,我们仍握有他亲笔所写的书信,即一般所指的，“第七书信。

耶鲁公开课 - 政治哲学导论课程节选