We live in a gravitational field and that it affects our day to day life, and if you have hip pain or a hip that's diseased in some way, and you can't stand up against that gravitational field in the same way, that severely limits what you can do in the world.

我们生活在一个重力场中,这个场影响着我们的日常生活,如果你的髋关节疼痛,或者有其他髋关节疾病的话,就不能像平常一样,站在这个重力场中了,这严重限制了人的活动能力

耶鲁公开课 - 生物医学工程探索课程节选

He notes: When we see a stroke aimed and just ready to fall upon the leg or arm of another person, we naturally shrink and draw back our own leg or arm and when it does fall we feel it in some measure and are hurt by it as well as the sufferer.

他说过，当我们看到有人要打,别一个人的腿或手臂，我们会不由自主的畏缩，手脚拢起来,当这一下打下来，某种程度上来说,我们会感受到和被打者一样的疼痛。

耶鲁公开课 - 心理学导论课程节选