In the most famous of these letters, the lengthy seventh one, he gives us, again, something of an autobiography and tells us a little bit about why he came to write this book.

这些书信中最著名的，是冗长的第七封，他写下类似自传的东西,并简单地讲述了,为何他要写这本巨著。

耶鲁公开课 - 政治哲学导论课程节选