What kind of themes? Let me talk a little bit about some of them. Let me just talk about, oh, about three or four of them, just so you can see what hopefully you'll be getting yourself into.

什么主题,这方面我说一说,我就说说,其中的三到四个,这样你就能明白,你要学什么

耶鲁公开课 - 1871年后的法国课程节选