So maybe that's why we need to believe in souls in order to explain free will.

或许我们需要相信灵魂的理由就是,为了便于解释自由意志

耶鲁公开课 - 死亡课程节选

So, if we want to go from that stable state to that less stable state, we need to put in a certain amount of energy to our system, that difference between the free electron and the electron bound to the metal.

所以，如果我们想使电子,从稳态到达不够稳定的状态，我们需要引入一定数量的,能量到系统中，即自由电子和束缚于金属的,电子的能量差。

麻省理工公开课 - 化学原理课程节选

You need the soul in order to explain free will.

那就是我们需要灵魂来解释自由意志

耶鲁公开课 - 死亡课程节选