What mathematicians are doing is using their mind to think about these Platonic ideas of mathematics.

数学家所做的就是用他们的心灵,来思考那些数学的柏拉图理念

耶鲁公开课 - 死亡课程节选

So the correct answer for titanium plus two Ar3d2 is going to be argon 3 d 2, whereas if we did not rearrange our order here 4s2 we might have been tempted to write as 4 s 2 so keep that in mind when you're doing the positive ions of corresponding atoms.

所以正2价钛离子,的正确答案是，然而如果我们不重新安排顺序,我们可能会写出2,所以请记住,它当你们在解关于原子,的正离子的时候。

麻省理工公开课 - 化学原理课程节选

The thought experiment, you recall, was one in which I imagine, I tell myself a story in which what I'm doing is I'm imagining my mind existing without my body.

回忆一下 那个思想实验,在其中我想象,我给自己讲了一个故事,在这个故事里,我只是想象我的心灵独立于我的身体存在

耶鲁公开课 - 死亡课程节选