Nobody knows, but there's a theory which won't answer your question but will put it into a broader context.

没有人知道答案,但有这么个理论,它无法回答你的问题,但却能让你从更宽广的视角来看这个问题

耶鲁公开课 - 心理学导论课程节选

So, we have a kind of image there of the autonomous aesthetic pleasure, right, the pleasure of imagination that's taken alone, according to one's own thoughts rather than in some broader, more social form.

好了，这就是一种自发的美学享受的情景,对，这就是独自幻想的乐趣，它出自人自己的想法，而不是一些更宽广的概念，不是一些更社会化的形式。

耶鲁公开课 - 1945年后的美国小说课程节选

It's not extensive in the sense that you just have to scatter your stuff over wide fields; that's not what it is.

它不是你泛泛的在宽广的,土地上播种就够了,它并非只是这样

耶鲁公开课 - 古希腊历史简介课程节选

Charity, or what he seems to have been thinking of as the selflessness of Christian love, is a virtue generous and capacious enough to encompass all of the others but faith, hope and chastity? "And the greatest of these is chastity"?

仁爱，或者,他认为的基督教无私的爱，是一种足够宽广，能够涵盖其他美德的美德,但是，信念，希望，贞操？最重要的是贞操？

耶鲁公开课 - 弥尔顿课程节选

I want to make you a richer person, a broader person, by instilling you with an unending deep and abiding understanding of classical music, so that's part of this, and not just here for Yale but for your life after Yale.

我希望你们成为更有内涵的人,心胸更加宽广的人,通过循循善诱,让你们体会到古典音乐的博大精深,这是一点,并不只在耶鲁大学,还有你以后的人生道路

耶鲁公开课 - 聆听音乐课程节选

As you may well have gleaned from your reading, the first books of the poem are particularly absorbed with the idea of forgetting, because more than any other part of Paradise Lost they display so ostentatiously the remarkable scope of Milton's own memory.

可能你们从阅读中也已经得知，这部诗的第一册,尤其表现了“遗忘“这一理念，因为相对于《失乐园》的其他部分,它们如此夸耀地展示了,弥尔顿自身记忆范围的宽广。

耶鲁公开课 - 弥尔顿课程节选