I can't see any good reason to believe premise two, and as far as I can see, Plato doesn't actually give us any reason to believe it in the dialogue.

我找不到什么很好的原因来相信前提二,在我看来,柏拉图在对话录中,也没有给出任何令人信服的理由

耶鲁公开课 - 死亡课程节选