It's got to be the case to prove that we've got a soul-- at least for this argument to work to prove that we've got a soul-- it's got to be the case that we've got free will.

必须要有事实证明我们有灵魂,至少是为了能够证明这个论证,人是有灵魂的,必须要有事实证明我们有自由意志

耶鲁公开课 - 死亡课程节选