The theory doesn't try to explain why they separated. We don't know Perhaps it was disaffection.

这一理论并着力解释他们为什么分离，我们不知道,也许是因为逆反之意。

耶鲁公开课 - 旧约导论课程节选

This seems to be a statement of his alienation or disaffection from the concerns of his fellow Athenians. I know nothing about what you do or what you care about.

这似乎是他对雅典同胞,所关心之事务疏离,或不满的表述,我不知道你做啥。

耶鲁公开课 - 政治哲学导论课程节选