So one thing that are physicalists who do not believe in souls, one thing that physicalist could say is "What's the key of personal identity? The body. Sameness of body.

物理主义学者不相信灵魂论,当被问到,人格同一性的关键是什么时,他们会回答，相同的肉体。

耶鲁公开课 - 死亡课程节选